English, P., & Kalumba, K. M. (1996). African philosophy: A classical approach. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)English, Parker, agus Kibujjo M. Kalumba. African Philosophy: A Classical Approach. Upper Saddle River N.J: Prentice Hall, 1996.
Lua MLA (9ú heag.)English, Parker, agus Kibujjo M. Kalumba. African Philosophy: A Classical Approach. Prentice Hall, 1996.
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