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

Bati survey report ( pp. 6 ) . Grant, Caroline A. (1992) · Summer Inst. for Linguistics (SIL); Min. of Higher Education, Computer Services and Scientific Research, Cameroon

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

Esquisse phonologique du ti, parler des ti de la province de l’ouest-Cameroun . Jean Nusi (1986) · http://pubman.mpdl.mpg.de/pubman/item/escidoc:403573:4/component/escidoc:403572/ti_nusi1986_o.pdf

Benue-Congo Comparative Wordlist . Kay Williamson (1973) · University of Ibadan, Nigeria: West African Linguistic Society

Die Sprachverhältnisse in Kamerun ( pp. 138-163 ) . Carl Meinhof (1895) · ZAOS. I

Notes on Gawar-Bati ( pp. 1-62 ) . Georg Morgenstierne (1950) · Det norske videnskabs-akademi. Skrifter. 2: Hist.-filos.~klasse · Oslo: Jacob Dybwad

A comparative study of the Bantu and semi-Bantu languages ( pp. xi, 819, map; xii, 544 ) . Johnston, Harry Hamilton (1919/22) · Clarendon Press

Urbanization and the Fate of Indigenous Urban Minority Languages in Cameroon . Chiatoh, Blasius Agha-ah (2020) · In Aspects of the phonology, morphology and syntax of Cameroonian languages: (Wandala, Kwandja, Bassa, Limbum, Ghomala’, Kejom, Obang, Baba, West Ring) and applied linguistics: essays in honour of Pius Ngwa Tamanji edited by Mba, Gabriel, Tabe, Florence & Neba, Ayu’nwi N. · LINCOM GmbH