Badur Aldeen Abdulrahman Ali. “Investigating the Score Grading System of Kassala University: State-of-the-Art Review”. White Nile Journal for Studies and Research, no. 26 (September 1, 2025): 146–165. Accessed June 13, 2026. https://journals.wnu.edu.sd/index.php/wnjsr/article/view/12.