The extent to which native speakers can identify a non-native accent is linked to the age at which individuals begin to immerse themselves in a language. Scholars disagree on the precise nature of this link, which might be influenced by a combination of factors, including: neurological plasticity, cognitive development, motivation, psychosocial states, formal instruction, language learning aptitude, and the usage of their first (L1) and second (L2) languages.
Phonological differences between a speaker's native language and English often lead to neutralization of distinctions in their English. Moreover, differences in sound inventory or distribution can result in difficult English sounds being substituted or dropped entirely. This is more common when the distinction is subtle between English sounds or between a sound of English and of a speaker's native language. While there is no evidence to suggest that a simple absence of a sound or sequence in one language's phonological inventory makes it difficult to learn, several theoretical models have presumed that non-native speech perceptions reflect both the abstract phonological properties and phonetic details of the native language.
Non-native speech patterns can be passed on to the children of learners, who will then exhibit some of the same characteristics despite being native speakers themselves. For example, this process has resulted in many of the distinctive qualities of Irish English and Highland English which were heavily influenced by a Goidelic substratum.
These are the most common characteristics of the Czech pronunciation of English:
The following are some characteristics of the English pronunciation by Indonesian speakers:
Studies on Italian speakers' pronunciation of English revealed the following characteristics:
In addition, Italians learning English have a tendency to pronounce words as they are spelled, so that walk is [walk], guide is [ɡwid̪], and boiled is [ˈbɔilɛd]. This is also true for loanwords borrowed from English as water (water closet), which is pronounced [ˈvat̪ɛr] instead of [ˈwɔːtə(r)].
Brazilian speakers of English as a second language are likely to exhibit several non-standard pronunciation features, including:
Pronunciation of vowels
MacDonald (1989:224) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
MacDonald (1989:224) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
Munro & Mann (2005:311) - Munro, Miles; Mann, Virginia (2005), "Age of immersion as a predictor of foreign accent", Applied Psycholinguistics, 26 (3): 311–341, doi:10.1017/S0142716405050198 https://doi.org/10.1017%2FS0142716405050198
Zsiga (2003:400–401) harvcoltxt error: no target: CITEREFZsiga2003 (help)
Jeffers & Lehiste (1979:140) - Jeffers, Robert J.; Lehiste, Ilse (1979), Principles and Methods for Historical Linguistics, MIT press, ISBN 978-0-262-60011-8
Goldstein, Fabiano & Washington (2005:203) - Goldstein, Brian; Fabiano, Leah; Washington, Patricia Swasey (2005), "Phonological Skills in Predominantly English-Speaking, Predominantly Spanish-Speaking, and Spanish–English Bilingual Children", Language, Speech, and Hearing Services in Schools, 36 (3): 201–218, doi:10.1044/0161-1461(2005/021), PMID 16175884, S2CID 15933169 https://doi.org/10.1044%2F0161-1461%282005%2F021%29
MacDonald (1989:223) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
See the overview at Hallé, Best & Levitt (1999:283) - Hallé, Pierre A.; Best, Catherine T.; Levitt, Andrea (1999), "Phonetic vs. phonological influences on French listeners' perception of American English approximants", Journal of Phonetics, 27 (3): 281–306, doi:10.1006/jpho.1999.0097 https://doi.org/10.1006%2Fjpho.1999.0097
MacDonald (1989:215) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
McEwan-Fujita, Emily (8 November 2016). "Gaelic and English". Experience an Emerald Adventure. http://www.celticlifeintl.com/gaelic-and-english/
Al Saqqaf & Vaddapalli (2012), p. 48. - Al Saqqaf, Abdullah; Vaddapalli, Maruthi (2012), "Teaching English vowels to Arab students: A search for a model and pedagogical implications", International Journal of English and Literature, 2 (2): 46–56
Al Saqqaf & Vaddapalli (2012), p. 48. - Al Saqqaf, Abdullah; Vaddapalli, Maruthi (2012), "Teaching English vowels to Arab students: A search for a model and pedagogical implications", International Journal of English and Literature, 2 (2): 46–56
Hago & Khan (2015) harvcoltxt error: no target: CITEREFHagoKhan2015 (help)
Khattab (2002:101) - Khattab, Ghada (2002), "/r/ production in English and Arabic bilingual and monolingual speakers", in Nelson, Diane (ed.), Leeds Working Papers in Linguistics and Phonetics, vol. 9, pp. 91–129 http://www.leeds.ac.uk/linguistics/WPL/WP2002/Khattab.pd
Alshalaan, Khawater (May 2020). "A Comparison between English and Arabic Sound Systems Regarding Places of Articulation". A Comparison Between English and Arabic Sound Systems Regarding Places of Articulation.
Khalifa, Mohamed (2020). Errors in English Pronunciation among Arabic Speakers. Cambridge Scholars Publishing. pp. Abstract.
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 93. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 93. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 93. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 94. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 94. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 94. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 94. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, pp. 91, 96. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Sewell, Andrew (2009). "World Englishes, English as a Lingua Franca, and the case of Hong Kong English". English Today. 25 (1): 37–43. doi:10.1017/S0266078409000066. S2CID 54170922. /wiki/Doi_(identifier)
Deterding, D., Wong J., & Kirkpatrick, A. (2008). The pronunciation of Hong Kong English. English World-Wide, 29, 148–149.
Sewell, Andrew (2017). "Pronunciation Assessment in Asia's World City: Implications of a Lingua Franca Approach in Hong Kong". In Isaacs T.; Trofimovich P. (eds.). Second Language Pronunciation Assessment: Interdisciplinary Perspectives. Vol. 107. Bristol: Multilingual Matters / Channel View Publications. pp. 237–255. ISBN 9781783096848. JSTOR 10.21832/j.ctt1xp3wcc.17. 9781783096848
Melen (2010:71–75) - Melen, Dušan (2010). Výslovnost angličtiny na pozadí češtiny (in Czech). Praha: Big Ben Bookshop Prague. pp. 71–75. ISBN 978-80-904306-2-4.
Collins & Mees 2003, p. 11, 286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 285–286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 285. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 285. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 285. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 285-286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 287. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 286. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 287. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 285. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 10, 288. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 10. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 289. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 288. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 289. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 288. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. ?. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 289. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 289. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Collins & Mees 2003, p. 289. - Collins, Beverly; Mees, Inger M. (2003), The Phonetics of English and Dutch (5th ed.), Leiden: Brill, ISBN 978-90-04-10340-5
Hallé, Best & Levitt (1999:294) - Hallé, Pierre A.; Best, Catherine T.; Levitt, Andrea (1999), "Phonetic vs. phonological influences on French listeners' perception of American English approximants", Journal of Phonetics, 27 (3): 281–306, doi:10.1006/jpho.1999.0097 https://doi.org/10.1006%2Fjpho.1999.0097
Paradis & LaCharité (2001:257), citing LaCharité & Prévost (1999) - Paradis, Carole; LaCharité, Darlene (2001), "Guttural deletion in loanwords", Phonology, 18 (2): 255–300, CiteSeerX 10.1.1.596.8071, doi:10.1017/S0952675701004079, S2CID 61325971 https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.8071
"French Speakers' English Pronunciation Errors". 2013-12-06. https://pronunciationstudio.com/french-speakers-english-pronunciation-errors/
Paradis & LaCharité 2012. - Paradis, Carole; LaCharité, Darlene (2012), "The Influence of Attitude on the Treatment of Interdentals in Loanwords: Ill-performed Importations", Catalan Journal of Linguistics, 11 (11): 97–126, doi:10.5565/rev/catjl.12 https://doi.org/10.5565%2Frev%2Fcatjl.12
"French Speakers' English Pronunciation Errors". 2013-12-06. https://pronunciationstudio.com/french-speakers-english-pronunciation-errors/
Jeffers & Lehiste (1979:140) - Jeffers, Robert J.; Lehiste, Ilse (1979), Principles and Methods for Historical Linguistics, MIT press, ISBN 978-0-262-60011-8
Gut (2009) - Gut, Ulrike (2009), Non-native speech. A corpus-based analysis of phonological and phonetic properties of L2 English and German., Frankfurt: Peter Lang
"10 English Pronunciation Errors by German Speakers - Pronunciation Studio". pronunciationstudio.com. 2016-04-04. Retrieved 2017-03-04. https://pronunciationstudio.com/10-english-pronunciation-errors-german-speakers/
Hickey, Raymond (October 2014). "German pronunciations of English" (PDF). University of Duisburg-Essen. https://www.uni-due.de/ELE/German_Pronunciations.pdf
"10 English Pronunciation Errors by German Speakers - Pronunciation Studio". pronunciationstudio.com. 2016-04-04. Retrieved 2017-03-04. https://pronunciationstudio.com/10-english-pronunciation-errors-german-speakers/
Shoebottom, Paul. "Language differences: English - German". esl.fis.edu. Archived from the original on 2017-05-15. Retrieved 2017-03-04. https://web.archive.org/web/20170515140106/http://esl.fis.edu/grammar/langdiff/german.htm
"10 English Pronunciation Errors by German Speakers - Pronunciation Studio". pronunciationstudio.com. 2016-04-04. Retrieved 2017-03-04. https://pronunciationstudio.com/10-english-pronunciation-errors-german-speakers/
Hickey, Raymond (October 2014). "German pronunciations of English" (PDF). University of Duisburg-Essen. https://www.uni-due.de/ELE/German_Pronunciations.pdf
"10 English Pronunciation Errors by German Speakers - Pronunciation Studio". pronunciationstudio.com. 2016-04-04. Retrieved 2017-03-04. https://pronunciationstudio.com/10-english-pronunciation-errors-german-speakers/
Cheung (2015). - Cheung, Karen (2 September 2015), "10 English Pronunciation Errors by Greek Speakers", Pronunciation Studio, retrieved 2021-12-17 https://pronunciationstudio.com/10-english-pronunciation-errors-by-greek-speakers/
Cheung (2015). - Cheung, Karen (2 September 2015), "10 English Pronunciation Errors by Greek Speakers", Pronunciation Studio, retrieved 2021-12-17 https://pronunciationstudio.com/10-english-pronunciation-errors-by-greek-speakers/
Cheung (2015). - Cheung, Karen (2 September 2015), "10 English Pronunciation Errors by Greek Speakers", Pronunciation Studio, retrieved 2021-12-17 https://pronunciationstudio.com/10-english-pronunciation-errors-by-greek-speakers/
Cheung (2015). - Cheung, Karen (2 September 2015), "10 English Pronunciation Errors by Greek Speakers", Pronunciation Studio, retrieved 2021-12-17 https://pronunciationstudio.com/10-english-pronunciation-errors-by-greek-speakers/
Cheung (2015). - Cheung, Karen (2 September 2015), "10 English Pronunciation Errors by Greek Speakers", Pronunciation Studio, retrieved 2021-12-17 https://pronunciationstudio.com/10-english-pronunciation-errors-by-greek-speakers/
Georgiou, Georgios P. (2019-03-01). "Bit and beat are heard as the same: Mapping the vowel perceptual patterns of Greek-English bilingual children". Language Sciences. 72: 1–12. doi:10.1016/j.langsci.2018.12.001. ISSN 0388-0001. S2CID 150229377. https://www.sciencedirect.com/science/article/pii/S0388000118302687
Shoebottom (2007) - Shoebottom, Paul (2007), "The differences between English and Hebrew", Frankfurt International School, archived from the original on 2013-11-06, retrieved 2008-05-19 https://web.archive.org/web/20131106053751/http://esl.fis.edu/grammar/langdiff/hebrew.htm
Shoebottom (2007) - Shoebottom, Paul (2007), "The differences between English and Hebrew", Frankfurt International School, archived from the original on 2013-11-06, retrieved 2008-05-19 https://web.archive.org/web/20131106053751/http://esl.fis.edu/grammar/langdiff/hebrew.htm
Shoebottom (2007) - Shoebottom, Paul (2007), "The differences between English and Hebrew", Frankfurt International School, archived from the original on 2013-11-06, retrieved 2008-05-19 https://web.archive.org/web/20131106053751/http://esl.fis.edu/grammar/langdiff/hebrew.htm
Shoebottom (2007) - Shoebottom, Paul (2007), "The differences between English and Hebrew", Frankfurt International School, archived from the original on 2013-11-06, retrieved 2008-05-19 https://web.archive.org/web/20131106053751/http://esl.fis.edu/grammar/langdiff/hebrew.htm
Shoebottom (2007) - Shoebottom, Paul (2007), "The differences between English and Hebrew", Frankfurt International School, archived from the original on 2013-11-06, retrieved 2008-05-19 https://web.archive.org/web/20131106053751/http://esl.fis.edu/grammar/langdiff/hebrew.htm
Nádasdy (2006) - Nádasdy, Ádám (2006), Background to English Pronunciation, Budapest: Nemzeti Tankönyvkiadó, ISBN 978-963-19-5791-4
Kovács & Siptár (2006:?) - Kovács, János; Siptár, Péter (2006), A-Z angol kiejtés, Budapest: Corvina Kiadó, ISBN 978-963-13-5557-4
Michael., Vago, Robert (1980). The sound pattern of Hungarian. Georgetown University Press. ISBN 0-87840-177-6. OCLC 1171902116.{{cite book}}: CS1 maint: multiple names: authors list (link) 0-87840-177-6
"CUBE: dropped". seas3.elte.hu. Retrieved 2022-10-08. http://seas3.elte.hu/cube/index.pl?s=dropped&t=&syllcount=&maxout=&wfreq=0-9&grammar=
Tambunsaribu, Gunawan; Simatupang, Masda Surti (2021). "Pronunciation Problems Faced by Indonesian College Students Who Learn to Speak English" (PDF). European Journal of Molecular & Clinical Medicine. 08 (2). http://repository.uki.ac.id/4902/1/PronunciationProblemsFaced.pdf
Ikhwanur, Asyahra; Khabibah, Isma; Saputra, Veamas Wahyu (2022). "ERRORS IN ENGLISH PRONUNCIATION MADE BY STUDENTS OF ESA UNGGUL UNIVERSITY". https://prosiding.esaunggul.ac.id/index.php/snip/article/download/281/275
Martin Russell, Analysis of Italian children's English pronunciation Archived 2007-05-27 at the Wayback Machine. Accessed 2007-07-12. http://www.eee.bham.ac.uk/russellm/ItalianEnglishReport/ItalianEnglish_report_v2.htm
"Italian Speakers' English Pronunciation Errors". 22 November 2013. https://pronunciationstudio.com/italian-speakers-english-pronunciation-errors/
"Italian Speakers' English Pronunciation Errors". 22 November 2013. https://pronunciationstudio.com/italian-speakers-english-pronunciation-errors/
"Italian Speakers' English Pronunciation Errors". 22 November 2013. https://pronunciationstudio.com/italian-speakers-english-pronunciation-errors/
"Italian Speakers' English Pronunciation Errors". 22 November 2013. https://pronunciationstudio.com/italian-speakers-english-pronunciation-errors/
Goto (1971:?) - Goto, Hiromu (1971), "Auditory perception by normal Japanese adults of the sounds "l" and "r""", Neuropsychologia, 9 (3): 317–323, doi:10.1016/0028-3932(71)90027-3, PMID 5149302 https://doi.org/10.1016%2F0028-3932%2871%2990027-3
Hallé, Best & Levitt (1999:284) - Hallé, Pierre A.; Best, Catherine T.; Levitt, Andrea (1999), "Phonetic vs. phonological influences on French listeners' perception of American English approximants", Journal of Phonetics, 27 (3): 281–306, doi:10.1006/jpho.1999.0097 https://doi.org/10.1006%2Fjpho.1999.0097
"Pronunciation problems for Brazilian students of English". Archived from the original on 2009-10-15. Retrieved 2009-10-15. http://arquivo.pt/wayback/20091015203916/http://www3.telus.net/linguisticsissues/pronunciation.html
Palatalization in Brazilian Portuguese/English interphonology http://ling.auf.net/lingbuzz/000503/current.pdf
Preceding phonological context effects on palatalization in Brazilian Portuguese/English interphonology Page 68. https://periodicos.ufsc.br/index.php/desterro/article/view/2175-8026.2008n55p63/14859
Thompson (1991) - Thompson, Irene (1991), "Foreign Accents Revisited: The English Pronunciation of Russian Immigrants", Language Learning, 41 (2): 177–204, doi:10.1111/j.1467-1770.1991.tb00683.x https://doi.org/10.1111%2Fj.1467-1770.1991.tb00683.x
Zsiga (2003:400–401, 423) harvcoltxt error: no target: CITEREFZsiga2003 (help)
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
Sukmawijaya, Jeri, Sutiono Mahdi, and Susi Yuliawati (2020). "AN ACOUSTIC ANALYSIS OF VOICELESS ALVEOLAR PLOSIVE/t/IN SUNDANESE, INDONESIAN, AND ENGLISH BY SUNDANESE SPEAKERS." Metahumaniora 10.1: 1-13.
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"О характерных ошибках в произношении при изучении английского языка". 2017-10-20. http://litera.in.ua/mistakes_in_english_prononciations.php
"О характерных ошибках в произношении при изучении английского языка". 2017-10-20. http://litera.in.ua/mistakes_in_english_prononciations.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"Как исправить или улучшить свое произношение?". http://www.english-easy.info/articles/ar79.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"Как исправить или улучшить свое произношение?". http://www.english-easy.info/articles/ar79.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"LanguageLink TEFL clinic - Pronunciation". http://jobs.languagelink.ru/tefl_clinic/teaching_knowledge/speaking_skills/pronunciation.php
"Как исправить или улучшить свое произношение?". http://www.english-easy.info/articles/ar79.php
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
MacDonald (1989:219) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
Swan 2001, p. 93. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
MacDonald (1989:219) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
MacDonald (1989:219) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
Goldstein, Fabiano & Washington (2005:203) - Goldstein, Brian; Fabiano, Leah; Washington, Patricia Swasey (2005), "Phonological Skills in Predominantly English-Speaking, Predominantly Spanish-Speaking, and Spanish–English Bilingual Children", Language, Speech, and Hearing Services in Schools, 36 (3): 201–218, doi:10.1044/0161-1461(2005/021), PMID 16175884, S2CID 15933169 https://doi.org/10.1044%2F0161-1461%282005%2F021%29
Goldstein, Fabiano & Washington (2005:203) - Goldstein, Brian; Fabiano, Leah; Washington, Patricia Swasey (2005), "Phonological Skills in Predominantly English-Speaking, Predominantly Spanish-Speaking, and Spanish–English Bilingual Children", Language, Speech, and Hearing Services in Schools, 36 (3): 201–218, doi:10.1044/0161-1461(2005/021), PMID 16175884, S2CID 15933169 https://doi.org/10.1044%2F0161-1461%282005%2F021%29
MacDonald (1989:219) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
Jeffers & Lehiste (1979:139) - Jeffers, Robert J.; Lehiste, Ilse (1979), Principles and Methods for Historical Linguistics, MIT press, ISBN 978-0-262-60011-8
MacDonald (1989:219) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
MacDonald (1989:219) - MacDonald, Marguerite (1989), "The influence of Spanish phonology on the English spoken by United States Hispanics", in Bjarkman, Peter; Hammond, Robert (eds.), American Spanish pronunciation: Theoretical and applied perspectives, Washington, D.C.: Georgetown University Press, pp. 215–236, ISBN 9780878404933 https://books.google.com/books?id=BdW6Y5qPwSgC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, pp. 91, 96. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Swan 2001, p. 91. - Swan, Michael (2001). Learner English: A Teacher's Guide to Interference and Other Problems, Volume 1. Cambridge University Press. ISBN 9780521779395. https://books.google.com/books?id=6UIuWj9fQfQC
Hwa-Froelich, Hodson & Edwards (2003:269) - Hwa-Froelich, Deborah; Hodson, Barbara W; Edwards, Harold T (2003), "Characteristics of Vietnamese Phonology", American Journal of Speech-Language Pathology, 11 (3): 264–273, doi:10.1044/1058-0360(2002/031) https://doi.org/10.1044%2F1058-0360%282002%2F031%29
Hwa-Froelich, Hodson & Edwards (2003:267) - Hwa-Froelich, Deborah; Hodson, Barbara W; Edwards, Harold T (2003), "Characteristics of Vietnamese Phonology", American Journal of Speech-Language Pathology, 11 (3): 264–273, doi:10.1044/1058-0360(2002/031) https://doi.org/10.1044%2F1058-0360%282002%2F031%29
Hwa-Froelich, Hodson & Edwards (2003:271) - Hwa-Froelich, Deborah; Hodson, Barbara W; Edwards, Harold T (2003), "Characteristics of Vietnamese Phonology", American Journal of Speech-Language Pathology, 11 (3): 264–273, doi:10.1044/1058-0360(2002/031) https://doi.org/10.1044%2F1058-0360%282002%2F031%29
Hwa-Froelich, Hodson & Edwards (2003:265) - Hwa-Froelich, Deborah; Hodson, Barbara W; Edwards, Harold T (2003), "Characteristics of Vietnamese Phonology", American Journal of Speech-Language Pathology, 11 (3): 264–273, doi:10.1044/1058-0360(2002/031) https://doi.org/10.1044%2F1058-0360%282002%2F031%29
Hwa-Froelich, Hodson & Edwards (2003:267) - Hwa-Froelich, Deborah; Hodson, Barbara W; Edwards, Harold T (2003), "Characteristics of Vietnamese Phonology", American Journal of Speech-Language Pathology, 11 (3): 264–273, doi:10.1044/1058-0360(2002/031) https://doi.org/10.1044%2F1058-0360%282002%2F031%29
Hwa-Froelich, Hodson & Edwards (2003:271) - Hwa-Froelich, Deborah; Hodson, Barbara W; Edwards, Harold T (2003), "Characteristics of Vietnamese Phonology", American Journal of Speech-Language Pathology, 11 (3): 264–273, doi:10.1044/1058-0360(2002/031) https://doi.org/10.1044%2F1058-0360%282002%2F031%29