Gultom, Putri Maretta, Anis Endang, and Sri Narti. “ The Role Of Telkomsel Public Relations In Maintaining Customer Loyalty Through Telkomsel Poin Program”. Multidisciplinary Journals 3, no. 2 (June 12, 2026): 145–154. Accessed November 10, 2026. https://journal.utami.id/index.php/MJ/article/view/1397.