ACATRINEI, C.; PUIU, T. V. The Loyalty Card: Issues in Evaluating Loyalty Program Effectiveness. International Journal of Economic Practices and Theories, [S. l.], v. 2, n. 3, p. 153-164, 2012. Disponível em: http://ijept.eu/index.php/ijept/article/view/The_Loyalty_Card%3A__Issues_in_Evaluating_Loyalty_Program_Effect. Acesso em: 20 sep. 2024.