al-Siyasah al-iqtisadiyah wa al-maliyah lil-khalifah al-Rashid'Umar ibn'Abd al-'Aziz - 'Abidin, Bashir Kamal ('Amman : Dar al-ma'mun, 2006)
Keywords: 'Umar -- II, -- Caliph, -- d. 720; Caliphs -- Biography; Islamic Empire -- History -- 661-750; Islamic Empire -- Economic policy