Hasbullah, Hasbullah, and Sriyono Sriyono. “Unlocking IPhone Brand Loyalty and Extension Insights”. Indonesian Journal of Innovation Studies 25, no. 1 (January 10, 2024): 10.21070/ijins.v25i1.1091. Accessed July 3, 2024. https://ijins.umsida.ac.id/index.php/ijins/article/view/1091.