HAMDAN, Hamdan; ALI, Hapzi. The Effect of Loyalty Points, Tiered Membership, Gamification, and Free Shipping on Customer Retention: A Study of Loyalty Programs in Online Shopping Applications. Greenation Education and Culture Review, [S. l.], v. 1, n. 2, p. 53–60, 2025. DOI: 10.38035/gecr.v1i2.605. Disponível em: https://greenationpublisher.org/GECR/article/view/605. Acesso em: 3 mar. 2026.