عرفات عبدالله. “The Relationship of the Umayyad State With the Byzantine State During the Era of Muawiyah Bin Abi Sufyan (41-60 AH 660-681 AD)”. Kufa Journal of Arts, vol. 1, no. 10, Oct. 2011, pp. 265-92, https://doi.org/10.36317/kaj/2011/v1.i10.6539.