Mukid, Moch., Albert Lumban Gaol, Bagus Saputra, and Masithoh Rochayani. “Identification of Factors Influencing the Preferences of College Students in Choosing SIM Cards Using the Orthogonal Factor Model”. International Journal Of Mathematics And Computer Research 13, no. 5 (May 28, 2025): 5247-5252. Accessed May 19, 2026. https://www.ijmcr.everant.org/index.php/ijmcr/article/view/967.