Bibliography

Bibliography of Vitality:
Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig (eds.), 2013. Ethnologue: Languages of the World, 17th edition. Dallas, Texas: SIL International. Online version: http://www.ethnologue.com.
Bibliography of Locations:
Christopher Rogers, Naomi Palosaari and Lyle Campbell. 2010. "Endangered Languages of the United States." In Atlas of the World’s Languages in Danger of Disappearing, edited by Christopher Moseley. 108-130. UNESCO.
Bibliography of Context:
Victor Golla, Ives Goddard, Lyle Campbell, Marianne Mithun and Mauricio Mixco. 2008. "North America." In Atlas of the World's Languages, edited by Chris Moseley and Ron Asher. 7-41. Routledge.