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<h2 id="references">References</h2> <ol> <li id="fn:1"><p>Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 0-631-19815-6. <a href="0-631-19815-6" target="_blank">0-631-19815-6</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Gordon, Matthew; Ladefoged, Peter (2001). "Phonation types: A cross-linguistic overview" (PDF). Journal of Phonetics. 29 (4): 383–406. CiteSeerX 10.1.1.232.7720. doi:10.1006/jpho.2001.0147. <a href="http://www.linguistics.ucsb.edu/faculty/gordon/phonation.pdf" target="_blank">http://www.linguistics.ucsb.edu/faculty/gordon/phonation.pdf</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 0-631-19815-6. <a href="0-631-19815-6" target="_blank">0-631-19815-6</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 0-631-19815-6. <a href="0-631-19815-6" target="_blank">0-631-19815-6</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 0-631-19815-6. <a href="0-631-19815-6" target="_blank">0-631-19815-6</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> </ol>