Adebayo, OLOIDI Gabriel, and OLUWALANA Lucas Oladimeji. “Economics of Business Research on Customers’ Retention and Sales Improvement in Supermarkets”. IJRDO - Journal of Business Management 1, no. 6 (September 10, 2018): 14-30. Accessed April 20, 2025. http://cpanel.ijrdo.org/index.php/bm/article/view/2276.