The Effectiveness of Customer Loyalty Programs and Retention Strategies in the Present Marketing Scenario. International Journal of Food and Nutritional Sciences, [S. l.], v. 8, n. 3, p. 1089–1096, 2019. Disponível em: https://www.ijfans.org/index.php/Journal/article/view/979. Acesso em: 8 aug. 2026.