(3GdEeGeI hGdSjGSI (B/s - (3GHf bJjHI GdOjfhQj, CHj eMeO YHO Gddg Hf eSde,s 828-889? (Beirut : Dar al-Kutub al-Ilmiyah, 2001)
Keywords: Islamic leadership; Islam and politics; Islamic Empire -- History