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) ·

Endangered Languages in Central Africa ( pp. 163-178 ) . Bruce Connell (2007) · In Language Diversity Endangered edited by Matthias Brenzinger · Mouton de Gruyter

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

Atlas of the World’s Languages in Danger . Christopher Moseley (ed.) (2010) · UNESCO Publishing http://www.unesco.org/culture/en/endangeredlanguages/atlas

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

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

World Oral Literature Project . http://www.oralliterature.org

Moribund Languages of the Nigeria-Cameroon Borderland ( pp. 207-225 ) . Bruce Connell (1998) · In Endangered Languages in Africa edited by Matthias Brenzinger · 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

Language Ecology and Language Endangerment: An instance from the Nigeria-Cameroon borderland ( pp. 23–32 ) . Bruce Connell (2010) · Journal of West African Languages. 37 (1 ) ·

An outline classification of the Mambiloid languages ( pp. 105-118 ) . Roger Blench (1993) · Journal of West African languages.

Mambiloid Inside and Out: Mambiloid Integrity revisited and the situation of Somyev within Mambiloid. Paper presented at the symposium Genealogical language classification in Africa beyond Greenberg . Bruce Connell (2010) · https://www.asaf.hu-berlin.de/afrika/linguistik-und-sprachen/veranstaltungen/greenberg-workshop/mambiloid-inside-and-out-mambiloid-integrity-revisited-and-the-situation-of-somyev-within-mambiloid