Bibliography

Bibliography of Vitality:
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.
Bibliography of Locations:
2005. "The World Atlas of Language Structures." edited by Bernard Comrie et al. Oxford University Press.
Bibliography of Context:
Moseley, Christopher. 2007. Encyclopedia of the World's Endangered Languages, 1 edn. Abingdon: Routledge. ISBN 070071197X