MOHAMMED, Akram AbdEldaim. Analysis of the performance of Khartoum Customs Department during the period 2019-2021. Journal of Economic, Administrative and Legal Sciences, New Mexico, United States, v. 7, n. 7, p. 123–127, 2023. DOI: 10.26389/AJSRP.K030423. Disponível em: https://ajsrp.ojsexpert.com/index.php/jeals/article/view/6676. Acesso em: 20 dec. 2025.