Ibrahim, Adil Hassan, Dyah Mutiarin, and Eko Priyo Purnomo. “E-Services in Sudan During the Covid-19 Pandemic As a Model: A Case Study of University of Bahri-Sudan”. Journal of Governance and Public Policy 8, no. 2 (June 29, 2021): 165–183. Accessed May 17, 2025. https://journal.umy.ac.id/index.php/GPP/article/view/11422.