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) ·

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

World Oral Literature Project . http://www.oralliterature.org

Language endangerment in South America: The clock is ticking ( pp. 167-234 ) . Crevels, Mily (2012) · In The Indigenous Languages of South America: A Comprehensive Guide edited by Lyle Campbell and Veronica Grondona · Mouton de Gruyter

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

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

As línguas Waurá e Mehinakú do Brasil Central ( pp. 795-804 ) . Corbera Mori, Angel (2005) · In Anais do IV Congresso Internacional da ABRALIN edited by Ana Suely Arruda Câmara Cabral and Sanderson Castro Soares de Oliveira · Associação Brasileira de Lingüística, Universidade de Brasília

The Tribes of the Upper Xingu River ( pp. 321-348 ) . Claude Lévi-Strauss (1948) · In The Tropical Forest Tribes Handbook of South American Indians · Vol. 3 · edited by Julian H. Steward · Smithsonian Institution, Washington: Bureau of American Ethnology