Authorities: Numerical Indicators". Review of Croatian History. Croatian Institute of History. VIII (1): 117. Archived from the original on 17 November
Effraim Islamic Imperialism A History, New Haven: Yale University Press, 2006 p. 95. Karsh, Effraim Islamic Imperialism A History, New Haven: Yale University
Oxford History of Islam, 32. Esposito, The Oxford History of Islam, 55. Esposito, The Oxford History of Islam, 49. Esposito, The Oxford History of Islam