درويش ت. Previous studies and how to use them in academic research for social sciences: تاريخ الاستلام:30/10/2019 تاريخ القبول:03/01/2021. RDRH [Internet]. 2021 Dec. 27 [cited 2026 Nov. 2];16(04):329-54. Available from: https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/398