Kuschel, Rolf (1974). A Lexicon of Signs from a Polynesian Outliner Island: A Description of 217 Signs as Developed and Used by Kagobai, the Only Deaf-Mute of Rennell Island (PDF). København: Københavns Universitet. pp. 187 pages. ISBN 9788750015062. Retrieved 2016-01-22. 9788750015062
"ISO 639-3 Registration Authority Change request documentation for: 2016-002". ISO 639. SIL International. Retrieved 1 February 2017. http://www-01.sil.org/iso639-3/chg_detail.asp?id=2016-002&lang=rsi
Kuschel, Rolf (1974). A Lexicon of Signs from a Polynesian Outliner Island: A Description of 217 Signs as Developed and Used by Kagobai, the Only Deaf-Mute of Rennell Island (PDF). København: Københavns Universitet. pp. 187 pages. ISBN 9788750015062. Retrieved 2016-01-22. 9788750015062