Bibliography
Bibliography of Vitality:
Dimmendaal, Gerrit J. and F. K. Erhard Voeltz. 2007. "Africa." In Encyclopedia of the World's Endangered Languages, edited by Christopher Moseley. Routledge.
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:
Dimmendaal, Gerrit J. and F. K. Erhard Voeltz. 2007. "Africa." In Encyclopedia of the World's Endangered Languages, edited by Christopher Moseley. Routledge.