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) ·

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

Encyclopedia of the World's Endangered Languages . Christopher Moseley (2007) · 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

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

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

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 Crow language: grammatical sketch and analyzed text ( pp. 141 ) . Lowie, Robert Harry (1941) · University of California Publications in American Anthropology and Ethnology · Vol. 39:1 · Berkeley and Los Angeles: University of California Press

The Crow Language: Grammatical Sketch and Analyzed Text . Lowie, Robert H. (1941) · University of California Press

Dictionary of the Crow Language . Reed Jr., George (1975) ·