By Richard Gray
By Roland Oliver
By J. Desmond Clark
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By Roland Oliver, G. N. Sanderson
By John E. Flint
By Unesco, Mokhtar, G.
By Unesco, Ki-Zerbo, J.
By Unesco, Mazrui, Ali A.
By Unesco
By Linda M. Heywood, John K. Thornton (Boston University)
By Gerald West, Musa Dube
By Elizabeth A. Foster
By Maxwell, Ingrid Lawrie
By Linda M. Heywood (Howard University, Washington DC)
By Catherine M. Cole, Takyiwaa Manuh, Stephan F. Miescher
By Braeckman, Colette
By Eva-Maria Bruchhaus, Monika M. Sommer
By Prof David Killingray, Martin Plaut
By Judith A. Byfield (Cornell University, New York), Carolyn A. Brown, Timothy Parsons (Washington University, St Louis), Ahmad Alawad Sikainga (Ohio State University)
By Grace Stuart Ibingira
By Dennis Austin
By Lawrence James
By Elizabeth Hodgkin
By Northrup
By George Clement Bond, Nigel C. Gibson
By Isidore Okpewho, Carole Boyce Davies, Ali A. Mazrui
By Michael A. Gomez (New York University)
By Erik T. Gilbert, Jonathan T. Reynolds