By Richard H. Wilkinson (University of Arizona)
By Robert O. Collins (Professor of History, Professor of History, University of California at Santa Barbara)
By Shainool Jiwa (Institute of Ismaili Studies, London, UK)
By Joyce Tyldesley
By Pascal Vernus, Jean Yoyotte
By Rifa'a Al-Tahtawi, Daniel L. Newman
By Salah Ahmed El-Banasi
By Beth Baron
By Duane W. Roller (Professor Emeritus of Greek and Latin, Professor Emeritus of Greek and Latin, The Ohio State University, Columbus, OH)
By Marina Rustow
By Adrian Tinniswood
By Guy MacLean Rogers
By Lorna Oakes
By Lucia Gahlin
By Colin McEvedy
By John R. Bradley
By Hazem Kandil
By Jason Thompson
By Fernand Braudel, Sian Reynolds
By Ibrahim Abu Lughod
By Ereira, Alan, Jones, Terry
By Chris Toensing, Jeannie Sowers
By Amelie Kuhrt (University College London, UK)
By Brian Fagan
By Prof Peter Parsons
By Ralph A Austen (Professor Emeritus of African History, Professor Emeritus of African History, University of Chicago)
By N. Khan
By Marc Tyler Nobleman