درويش توفيق. “Previous Studies and How to Use Them in Academic Research for Social Sciences: تاريخ الاستلام:30 10 2019 تاريخ القبول:03 01 2021”. Human Resources Development Research 16, no. 04 (December 27, 2021): 329–354. Accessed November 2, 2026. https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/398.