Rangelov, Tihomir. 2019. The bilabial trills of Ahamb (Vanuatu): Acoustic and articulatory properties. In S. Calhoun, P. Escudero, M. Tabain and P. Warren (eds),Proceedings of the 19th International Congress of Phonetic Sciences, Melbourne, Australia 2019. Canberra, Australasian Speech Science and Technology Association Inc.: 1292-1296.
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See pp.33-34 of: Barbour, Julie (2012). A Grammar of Neverver. Germany: Mouton de Gruyter. ISBN9783110289619.
de Souza, Isaac Costa (2010). "3". A Phonological Description of "Pet Talk" in Arara (MA). University of North Dakota. S2CID61247622.
sil.org
www-01.sil.org
de Souza, Isaac Costa (2010). "3"(PDF). A Phonological Description of "Pet Talk" in Arara (MA). SIL Brazil. Archived from the original(PDF) on 2013-10-12. Retrieved 2014-01-09.
web.archive.org
de Souza, Isaac Costa (2010). "3"(PDF). A Phonological Description of "Pet Talk" in Arara (MA). SIL Brazil. Archived from the original(PDF) on 2013-10-12. Retrieved 2014-01-09.