By Osaghae, Eghosa
By David Murphy
By Robert S. Smith
By Richard L. Roberts
By John N Paden, John N. Paden
By Karl Maier
By Jeremy Black
By Stephen J. Braidwood
By Tunde Zack-Williams (University of Central Lancashire)
By Jean Marie Allman
By Martin Lynn (Queen's University Belfast)
By Ivor Wilks
By Richard Rathbone
By John Parker
By D. K. Fieldhouse (Emeritus Professor and Emeritus Fellow, Emeritus Professor and Emeritus Fellow, Jesus College, Cambridge)
By B. Marie Perinbam, B Marie Perinbam
By Francois Manchuelle, Martin A. Klein
By Larry W. Yarak (Assistant Professor of History, Assistant Professor of History, Texas A & M University)
By Arnold Hughes, David Perfect
By Joseph Hellweg
By Schmidt
By Mike McGovern
By The Diagram Group
By James Ciment
By Editha Platte
By Darren Kew
By Astrid Madimba, Chinny Ukata
By David Robinson (Michigan State University)
By Judith Scheele (University of Oxford)