Kasem Abdinibi Farag, Mohamed Amraja Mohamed, Mohammed A. Asselhab, Eman Shuaib Essa, و Sumaia Masoud. 2025. "Hierarchical Linear Modeling of Academic Achievement: An Empirical Study of Student, Teacher, and School Factors". مجلة شمال إفريقيا للنشر العلمي (NAJSP) 3 (3):236-46. https://najsp.com/index.php/home/article/view/561.