Marhoui, Sanaa, and Fouad Naoui. “Factors Determining the Relationship Between Principal and Service Provider for a Lasting and Effective Relationship”. Revue Internationale de la Recherche Scientifique (Revue-IRS) 2, no. 4 (June 26, 2024): 1456–1462. Accessed December 27, 2024. https://revue-irs.com/index.php/home/article/view/295.