Raf, Mulyadi, and Agus Syarif. “Loyalty Program and Its Influence on Customer Loyalty on Mobile Service With Customer Satisfaction As a Mediating Variable”. Journal of Business Studies and Management Review 3, no. 2 (June 28, 2020): 39–43. Accessed April 23, 2026. https://www.online-journal.unja.ac.id/jbsmr/article/view/9709.