Sindy Amarda, Maulana Agung P, and M. Iqbal Harori. “The Effect of Service Quality and Promotion on Telkomsel Customer Satisfaction (A Study of College Students in Bandar Lampung)”. International Journal of Economics, Business and Innovation Research 5, no. 02 (February 7, 2026): 175-188. Accessed November 4, 2026. https://e-journal.citakonsultindo.or.id/index.php/IJEBIR/article/view/2916.