Bibliography
Bibliography of Vitality:
Crevels, Mily. 2012. "Language Endangerment in South America: The Clock Is Ticking." In The Indigenous Languages of South America: A Comprehensive Guide, edited by Hans Henrich Hock et al.. 167-234. Mouton de Gruyter.
Bibliography of Locations:
Anthony Aristar, Helen Aristar-Dry and Yichun Xie. 2012. "LL-MAP (Language and Location: A Map Accessibility Project)." Online: http://llmap.org.
Bibliography of Context:
Lewis, M. Paul (ed.). 2009. Ethnologue: Languages of the World, 16 edn. http://www.ethnologue.com/home.asp. (15 February, 2011.)