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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

IPY-Documenting Alaskan and Neighboring Languages . Michael E. Krauss (2007) · National Science Foundation http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0732787&WT.z_pims_id=12816

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

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