濒危语言

来源： “The World Atlas of Language Structures” . , Bernard Comrie and David Gil and Martin Haspelmath and Matthew S. Dryer · Oxford University Press

来源： “Ethnologue: Languages of the World” . , M. Paul Lewis · SIL International

来源： “Atlas of the World’s Languages in Danger” . , Christopher Moseley · UNESCO Publishing

来源： “South America” (103-196) . Mily Crevels (2007) , C. Moseley · London & New York: Routledge

来源： “World Oral Literature Project” .

来源： “Language endangerment in South America: The clock is ticking” (167-234) . Crevels, Mily (2012) , Hans Henrich Hock and Lyle Campbell and Veronica Grondona · Mouton de Gruyter