Berahim@Ibrahim, A. Z. “OMAR IBN ’ABDUL ’AZIZ, KHALIFAH PEMERINTAHAN BANI UMAIYAH YANG BERTARAF MUJADDID”. Journal of Al-Tamaddun, vol. 1, no. 1, Dec. 2005, pp. 91-136, http://ijps.um.edu.my/index.php/JAT/article/view/7881.