YUDA, Mulfi Sandi; YULIANTI , Elis. Marketing Strategies in Maintaining IM3 Product Customer Loyalty. Golden Ratio of Marketing and Applied Psychology of Business, [S. l.], v. 5, n. 2, p. 454–470, 2025. DOI: 10.52970/grmapb.v5i2.930. Disponível em: https://goldenratio.id/index.php/grmapb/article/view/930. Acesso em: 16 apr. 2026.