al-Zumayli, M. '. M. (1979). Mahall 'aqd al-bay': Dirasah muqaranah. Jami'at al-Malik Abd al-Aziz.
Chicago Style (17th ed.) Citational-Zumayli, Muhammad 'Ali Muhammad. Mahall 'Aqd Al-bay': Dirasah Muqaranah. al-Mamlakah al-'Arabiyah al-Sa'udiyah: Jami'at al-Malik Abd al-Aziz, 1979.
MLA (8th ed.) Citational-Zumayli, Muhammad 'Ali Muhammad. Mahall 'Aqd Al-bay': Dirasah Muqaranah. Jami'at al-Malik Abd al-Aziz, 1979.
Warning: These citations may not always be 100% accurate.