Mohammed, Akram AbdEldaim. “Analysis of the Performance of Khartoum Customs Department During the Period 2019-2021”. Journal of Economic, Administrative and Legal Sciences 7, no. 7 (July 27, 2023): 123–127. Accessed December 20, 2025. https://ajsrp.ojsexpert.com/index.php/jeals/article/view/6676.