Bibliography
Bibliography of Vitality:
Roger Blench. 2011. "An Atlas of Nigerian Languages." Mallam Dendo. Online: http://www.rogerblench.info/Language/Africa/Nigeria/Atlas%%20of%%20Nigerian%%20Languages-%%20ed%%20III.pdf.
Bibliography of Locations:
Lewis, M. Paul (ed.). 2009. Ethnologue: Languages of the World, 16 edn. http://www.ethnologue.com/home.asp. (15 February, 2011.)
Bibliography of Context:
Roger Blench. 2011. "An Atlas of Nigerian Languages." Mallam Dendo. Online: http://www.rogerblench.info/Language/Africa/Nigeria/Atlas%%20of%%20Nigerian%%20Languages-%%20ed%%20III.pdf.