The Mbaka or Bwaka language, Ngbaka Ma'bo (also called Gbaka, Ma'bo, Ngbwaka, Ngbaka Limba) is a major Ubangian language spoken by the Mbaka people of CAR and Congo.
It's not clear how distinct the Gilima variety is, or whether it should be considered a separate language. It does have its own ISO 639-3 code.
^van de Weijer, Jeroen (1994). Stem Consonant Cooccurrence Restrictions in Ngbaka. Linguistics in the Netherlands 11: Dutch Linguistics Association (Algemene Vereniging voor Taalwetenschap). pp. 256–266.{{cite book}}: CS1 maint: location (link)
^Thomas, Jacqueline M. C. (1963). Le parler Ngbaka de Bokanga: phonologie, morphologie, syntaxe. Paris, The Hague: Paris: Paillart.