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/

LL-MAP (Language and Location: A Map Accessibility Project) . Anthony Aristar and Helen Aristar-Dry and Yichun Xie (2012) · http://llmap.org

A computational analysis of Gabon varieties ( pp. 3-17 ) . Bart Alewijnse and John Nerbonne and Lolke J. van der Veen and Franz Manni (2007) · In Proceedings of the RANLP (Recent Advances in Natural Language Processing) workshop on computational phonology edited by Osenova, Petya and others · http://www.ddl.ish-lyon.cnrs.fr/fulltext/Van%%20Der%%20Veen/Alewijnse_2007.pdf

My Apingi kingdom: with life in the great Sahara, and sketches of the chase of the ostrich, hyena, &c. ( pp. viii, [11]-254, plates ) . Chaillu, Paul Belloni du (1871) · Sampson Low & Co.

Bantu group MM (Central Ogowe), language 187: Okande-Ishogo (Pinji, Ivea, Shibe and other Lower Ogowe dialects), incl. Micogo, Bafubi or Bopovi, Aduañgi . Johnston, Harry Hamilton (1919/22) · In A comparative study of the Bantu and semi-Bantu languages Clarendon Press

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

Les classes nominales dans les langues bantoues des groupes B.10, B.20, B.30 (Gabon-Congo) ( pp. 360 ) . Jacquot, André (1983) · Travaux et documents de l’ORSTOM (Office de la Recherche Scientifique et Technique d’Outre-Mer), #157 ·