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) ·

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/

Los pueblos del Gran Chaco y sus lenguas, primera parte: Los enlhet-enenlhet del Chaco Paraguayo ( pp. 503-569 ) . Alain Fabre (2005) · Suplemento Antropológico. 40 (1) · Diccionario Etnolingüìstico y Güía Bibliográfica de los Pueblos Indígenas Sudamericanos · Vol. 40 · http://ling.fi/Entradas%20diccionario/Dic=EnlhetEnenlhet.pdf