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) ·

Endangered Languages in Mexico ( pp. 93-134 ) . Beatriz Garza Cuarón and Yolanda Lastra (1991) · In Endangered Languages edited by R. H. Robins and E. M. Uhlenbeck · New York: Berg

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

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

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

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

Chocho: Santa Catarina Ocotlán, Oaxaca ( pp. 175 ) . Mock, Carol (1977) · Archivo de Lenguas Indígenas de México · Vol. 4 · Centro de Investigación para la Integración Social

Gramática del Chocho de Santa Catarina Ocotlán, Oaxaca . Annette Veerman-Leichsenring (2000) · Netherlands: Research School of Asian, African and Amerindian Studies (CNWS), Universiteit Leiden

Gramática del Chocho . Veerman-Leichsenring, Annette (2000) · Research School CNWS

Chocho: Santa Catarina Ocotlán, Oaxaca . Ruiz de Bravo Ahuja, Gloria (1977) · Centro de Investigación para la Integración Social