“Administrative Duties And Responsibilities of the Minister During Abbasside Era: For Period (247-334A.H.) (861-945A. D.)”. Al-Adab Journal, no. 133 (June 15, 2020): 251–306. Accessed May 2, 2024. https://aladabj.uobaghdad.edu.iq/index.php/aladabjournal/article/view/858.