SIHOTANG, D. A. H.; APRIANINGSIH, A. . The Impact of a Loyalty Program on Credit Card Portfolio Performance: A Cluster-Based Analysis of Redeemers and Non-Redeemers in Q Rewards, Q-Bank Qatar. Eduvest - Journal of Universal Studies, [S. l.], v. 6, n. 1, p. 808–825, 2026. DOI: 10.59188/eduvest.v6i1.51987. Disponível em: https://eduvest.greenvest.co.id/index.php/edv/article/view/51987. Acesso em: 24 mar. 2026.