- Author: Paul Nchoji Nkwi, Peter Geschiere, Das Deutsche Kolonialblatt (DKB)
- Language: English, German
- Year: 1989
- Author: Walter Rodney, Edward A Alpers, Pierre-Michel Fontaine
- Language: English
- Year: 1983
- Author: Lionel Bender
- Language: English
- Year: 1983
- Author: Talmy Giveon
- Language: English
- Year: 1972
- Author: Leslie H Stennes, Michigan State University. African Studies Center
- Language: English
- Year: 1967
- Author: [by] Leslie H. Stennes. Project director: Irvine Richardson.
- Language: English
- Year: 1967