Kituba

Kituba, or Kongo, is a creole language (a full fledged languaged derived from a pidgin) based on the KiKongo language spoken in the Manianga area (Lower-Congo). It has been influenced by Lingala, French, Swahili, Portuguese, and other local dialects, however, to such an extent that it is not intelligible to speakers of KiKongo or its dialects. It is both a literary language and a lingua franca throughout Angola, Congo, Gabon, and Zaire. There are about 5 million first and second language speakers. Several dialects exist, but the major distinction is between the eastern and western dialects..

Sources:

Kongo Language Page
Empereur.com
Ethnologue

Independent Study Courses Available at UCSD:

• Conversational Kituba, LIDS 19
   L.B. Swift and E. W. A. Zola, Kituba Basic Course (Tape) 

Other Local Resources:

UCSD International Center
Mingei museum of folk art