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/

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

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

Vocabulary of the Guajajara Dialect ( pp. 209-248 ) . F. J. Roberts and S. P. Symes (1936) · Journal de la Société des Américanistes. XXVIII

The Tenetehara ( pp. 137-148 ) . Charles Wagley and Eduardo Galvão (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

Hierarchical structures in Guajajara ( pp. 214 ) . Bendor-Samuel, David (1972) · Summer Institute of Linguistics: Publications in Linguistics · Vol. 37 · The Summer Institute of Linguistics and the University of Texas at Arlington

Os Tenetehara-Guajajara: convívio e integração ( pp. 343-353 ) . Diniz, Edson Soares (1984-85) · Revista de Antropologia. 27 (28) ·

Materialien zur Sprachenkunde Brasiliens IV: Vocabulare der Guajajara und Anambē (Para) ( pp. 163-168 ) . Paul Ehrenreich (1895) · ZfE. XXVII

Internal classification of the Tupi-Guarani linguistic family ( pp. 107-129 ) . Lemle, Miriam (1971) · In Tupi studies I Summer Institute of Linguistics Publications in Linguistics and Related Fields · Vol. 29 · edited by David Bendor-Samuel · Summer Institute of Linguistics of the University of Oklahoma

Hierarchical Structures in Guajajara . Bendor-Samuel, David (1972) · Summer Institute of Linguistics.

Na Terra das Palmeiras . Abreu, Fróes (1931) · Officina Industrial Graphica