Khalil Ibrahim Salam, S. (2016). 'The Political and Civilized Relations between the Emirate of Beni Saleh in Nkur and the Andalusian- Umayyad State', Annals of the Faculty of Arts, Ain Shams University, 44(January - March (B)), pp. 357-396. doi: 10.21608/aafu.2016.9333