Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

Ethnologue: Languages of the World, 16th Edition (2009) . (2009) · edited by M. Paul Lewis · SIL International http://www.ethnologue.com/

Les emplois de certains morphèmes déictiques en bata (Tchadique centrale) ( pp. 61-86 ) . Raymond Boyd (2007) · Topics in Chadic Linguistics IV: Comparative and Descriptive Studies: Papers from the 3rd Biennial International Colloquium on the Chadic Languages. edited by Henry Tourneux · Rüdiger Köppe Verlag

Von seriellen Verben und Auxiliaren: Die Grammatikalisierung von Bewegungsverben in Adamawa-Sprachen ( pp. 189-208 ) . Holger W. Markgraf (2011) · In Afrikanische Sprachen Im Fokus. Linguistische Beiträge Zum 19. Afrikanistentag, Mainz 8.–10. April 2010 edited by Raija Kramer and Holger Tröbs and RAimnd Kastenholz · Rüdinger Köppe Verlag

Language shift from mother tongue towards Fulfulde in Adamawa State, Nigeria: causes and consequences ( pp. 296-225 ) . Fakuade, Gbenga and Gambo, Matudi and Bashir, Abdullahi (2003) · Anthropological linguistics. 45 (3) ·

Éléments du description du Kota, langue bantoue du Gabon, B.25 . Piron, Pascale (1990) ·