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, [S. l.], v. 16, n. 04, p. 329–354, 2021. Disponível em: https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/398. Acesso em: 2 nov. 2026.