Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

Ethnologue: Languages of the World, 16th Edition (2009) . (2009) · edited by M. Paul Lewis · SIL International http://www.ethnologue.com/

Atlas of the World’s Languages in Danger . Christopher Moseley (ed.) (2010) · UNESCO Publishing http://www.unesco.org/culture/en/endangeredlanguages/atlas

South America ( pp. 103-196 ) . Mily Crevels (2007) · In Atlas of the World's Endangered Languages edited by C. Moseley · London & New York: Routledge

Highland South America and the Caribbean . Willem Adelaar and Gustavo Solis Fonseca (2010) · In Atlas of the World’s Languages in Danger of Disappearing edited by Christopher Moseley · UNESCO

The World Atlas of Language Structures . (2005) · edited by Bernard Comrie and David Gil and Martin Haspelmath and Matthew S. Dryer · Oxford University Press

The Phonotactics of Cayuvava ( pp. 143-150 ) . Key, Harold (1961) · International Journal of American Linguistics. 27 (2) ·

Bolivian Indian Tribes . Key, Harold and Key, Mary (1967) · Summer Institute of Linguistics

Morphology of Cayuvava . Harold H. Key (1967) · Janua Linguarum: Series Practica · Vol. LIII · Mouton de Gruyter

Morphology of Cayuvava . Key, Harold (1963) ·