Campbell, L. (1997). American Indian languages: The historical linguistics of Native America. Oxford University Press.
Chicago-referens (17:e uppl.)Campbell, Lyle. American Indian Languages: The Historical Linguistics of Native America. New York: Oxford University Press, 1997.
MLA-referens (9:e uppl.)Campbell, Lyle. American Indian Languages: The Historical Linguistics of Native America. Oxford University Press, 1997.
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