Nabila, Belmehdi, Boudaouad Hamida, and Boulekroune Radia. “Contribution of Customer Relationship Management to Building Customer Loyalty: Case Study of Heetch El Djazair Foundation”. International journal of economic perspectives 18, no. 1 (August 4, 2024): 126–142. Accessed May 6, 2026. https://ijeponline.org/index.php/journal/article/view/550.