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

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

Baca (Bongo) survey report . Douglas W. Boone (1992) · http://silcam.org/languages/languagepage.php?languageid=14

Tones and Verb Classes in Bongo ( pp. 335-345 ) . Nougayrol, Pierre (2006) · In Insights into Nilo-Saharan Language, History and Culture: Proceedings of the 9th Nilo-Saharan Linguistic Colloquium, Institute of African and Asian Studies, University of Khartoum, 16-19 February 2004 Nilo-Saharan · Vol. 23 · edited by Al-Amin Abu-Manga and Leoma Gilley and Anne Storch · Köln: Rüdiger Köppe

Les Bongo-Rimba . Efraim Andersson (1983) · Occasional Papers · Vol. IX · Uppsala: Almqvist & Wiksell

The Bongo ( pp. 1-61 ) . E. E. Evans-Pritchard (1929) · Sudan Notes and Records. XII

The Nguni languages: a simple presentation and comparison of Zulu, Xhosa and Swati ( pp. 78 ) . Canonici, Noverino N. (1994) · Dept. of Zulu Language and Literature, Univ. of Natal

The Bantu tribes of South Africa: reproductions of photographic studies, 3: the Nguni; section 5: Baca, Hlubi, Xesibe ( pp. 40, plates 153-198 ) . Duggan-Cronin, Alfred Martin (1954) · Deighton, Bell & Co.

Esquisse phonologique du bongo . Eto, Roger Abessolo (1990) ·

Bantu group T (Zulu-Kafir), language 75: Cosa (‘Kafir’ dialects), incl. Feñgu, Baca, Pondo, and the woman’s speech Hlonipha . Johnston, Harry Hamilton (1919/22) · In A comparative study of the Bantu and semi-Bantu languages Clarendon Press

Some features on the phonetic and grammatical structure of Baca . Jordan, Archibald Campbell (1953) ·

A grammar of Baca . Hallowes, D.P. (1942) ·

The function of annual first fruit ceremonies in Baca social structure ( pp. 75-87 ) . Hammond-Tooke, W. David (1953) · African studies. 12 (2) ·

The initiation of a Baca isangoma diviner ( pp. 16-22 ) . Hammond-Tooke, W. David (1955) · African studies. 14 (1) ·

The attainment of adult status among the Mount Frere Bhaca ( pp. 16-20 ) . Hammond-Tooke, W. David (1958) · African studies. 17 (1) ·

Some Bhaca religious categories ( pp. 1-13 ) . Hammond-Tooke, W. David (1960) · African studies. 19 (1) ·

Bhaca society: a people of the Transkeian uplands, South Africa ( pp. xx, 325 ) . Hammond-Tooke, W. David (1962) · Oxford Univ. Press; Inst. of Social and Economic Research, Rhodes Univ.