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/

Africa ( ch. 7 ) . Gerrit J. Dimmendaal and F. K. Erhard Voeltz (2007) · In Encyclopedia of the World's Endangered Languages edited by Christopher Moseley · Routledge

Cultural Ecologies of Endangered Languages: the Case of Wawa and Njanga ( pp. 217-238 ) . Sascha Sebastian Griffiths and Laura Robson (2010) · Anthropological Linguistics. 52 (2) · http://muse.jhu.edu/journals/anthropological_linguistics/v052/52.2.griffiths.html

An introduction to the Mambiloid languages ( pp. 79-92 ) . Connell, Bruce A. (2001) · In Research mate in African linguistics (focus on Cameroon): a fieldworker’s tool for deciphering the stories Cameroonian languages have to tell, in honor of Professor Larry M. Hyman Grammatische Analysen afrikanischer Sprachen, #17 · edited by Mutaka, Ngessimo M. and Chumbow, Beban Sammy · Rüdiger Köppe Verlag

The integrity of Mambiloid ( pp. 197-213 ) . Connell, Bruce A. (2000) · In Proceedings of the 2nd world congress of African linguistics, Leipzig 1997 edited by Wolff, Ekkehard and Gensler, Orin David · Rüdiger Köppe Verlag