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/

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

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 Native Tribes of Eastern Bolivia and Western Matto Grosso . Alfred Métraux (1942) · Bureau of American Ethnology: Bulletin · Vol. 134 · Washington, D.C.: Smithsonian Institution

Diccionario ignaciano y castellano, con apuntes gramáticales ( pp. 644 ) . Ott, Willis and Ott, Rebecca B. (1983) · Instituto Lingüístico de Verano

Ignaciano ( pp. 99-180 ) . Ott, Willis and Ott, Rebecca B. (1965) · In Gramáticas estructurales de lenguas bolivianas 3 edited by Esther Matteson · Instituto Lingüístico de Verano

Phonemes of the Ignaciano language ( pp. 56-60 ) . Ott, Willis and Ott, Rebecca (1967) · Linguistics. 35

Ignaciano ( pp. 85-137 ) . Ott, Willis and Ott, Rebecca B. (1967) · In Bolivian Indian grammars 1 Summer Institute of Linguistics Publications in Linguistics and Related Fields · Vol. 16 · edited by Matteson, Esther · Summer Institute of Linguistics of the University of Oklahoma