By Arnold Hughes, David Perfect
By Paul E. Lovejoy
By Michael Gomez
By Michael J. Watts
By V. HA (c)lA (c)non, Kenneth A. Loparo
By M. Salau
By M. Mustapha, J. Bangura
By P. Valsecchi
By Hollis R. Lynch
By M.C. Atkinson
By John D. Hargreaves
By James F. Searing
By John Kent (Lecturer in International History, Lecturer in International History, London School of Economics and Political Science)
By Peter Mark (Wesleyan University, Connecticut), Jose da Silva Horta (Universidade de Lisboa)
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 The Diagram Group
By Darren Kew
By Editha Platte
By Rough Guides