Roof, Mustafa Saher, and Khaled Khazi A. Al-tamy. 2021. “Determining the Added University Student Costs According to Elearning, a Case Study in the Departments of the College of Administration and Economics University of Mosul”. Tikrit Journal of Administrative and Economic Sciences 17 (55, 2):39-59. https://doi.org/10.25130/tjaes.17.55.2.3.