Bibliography
Bibliography of Vitality:
Johnson, Eric. 2005. Étude Sociolinguistique De La Langue zirenkel Du Tchad.
Bibliography of Locations:
Moseley, Christopher (ed.). 2010. Atlas of the World’s Languages in Danger, 3rd edn. http://www.unesco.org/culture/en/endangeredlanguages/atlas. (03 June, 2011.)
Bibliography of Context:
Johnson, Eric. 2005. Étude Sociolinguistique De La Langue zirenkel Du Tchad.