al-Bidayah wan nihayah : masa Khulafa'ur Rasyidin - Ibn Kathir, Isma'il ibn'Umar, ca. 1301-1373; al-Atsari, Abu Ihsan (Jakarta : Darul Haq, 2004)
Keywords: Caliphs -- History; Islam and politics -- Islamic Empire -- History; Islamic Empire -- History; Islamic Empire -- Politics and government