Jurji Zayadan's History of Islamic civilization Umayyads and Abbasids - Zaydan, Jirji 1861-1914; Margoliouth, D. S. (David Samuel) 1858-1940; زيدان، جرجي 1861-1914 (New Delhi Kitab Bhavan, 1994)
Keywords: Caliphs -- History; Civilization, Arab; Islamic Empire -- History