Kasem Abdinibi Farag, Mohamed Amraja Mohamed, Mohammed A. Asselhab, Eman Shuaib Essa, Sumaia Masoud. Hierarchical Linear Modeling of Academic Achievement: An Empirical Study of Student, Teacher, and School Factors . NAJSP [انترنت]. 17 أغسطس، 2025 [وثق 20 أغسطس، 2025];3(3):236-4. موجود في: https://najsp.com/index.php/home/article/view/561