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/

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

North America ( pp. 1-96 ) . Victor Golla (2007) · In Encyclopedia of the World's Endangered Languages edited by C. Moseley · London & New York: Routledge

North America ( pp. 7-41 ) . Victor Golla and Ives Goddard and Lyle Campbell and Marianne Mithun and Mauricio Mixco (2008) · In Atlas of the World's Languages edited by Chris Moseley and Ron Asher · Routledge

Endangered Languages of the United States ( pp. 108-130 ) . Christopher Rogers, Naomi Palosaari and Lyle Campbell (2010) · In Atlas of the World’s Languages in Danger of Disappearing edited by Christopher Moseley · UNESCO

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

Chiricahua Apache ( pp. 55-84 ) . Harry Hoijer (1946) · In Linguistic Structures of Native America Viking Fund Publications in Anthropology · Vol. 6 · edited by Harry Hoijer · New York: Viking Fund

Chiricahua Apache ( pp. 55-84 ) . Hoijer, Harry (1946) · In Linguistic Structures of Native America edited by Osgood, Cornelius · Viking Fund Inc.

Mescalero Apache Dictionary . Breuninger, Evelyn and Hugar, Elbys and Lathan, Ellen Ann (1982) · Mescalero Apache Tribe