Ridho Bramulya Ikhsan, Johannes Widjaja Wahono , Rudy Kodirun. 2020. “CUSTOMER LOYALTY TO PREPAID CARD: THE SURVEY ON STUDENT AS IM3 USERS IN LAMPUNG, INDONESIA”. PalArch’s Journal of Archaeology of Egypt / Egyptology 18 (1):538 -52. https://www.archives.palarch.nl/index.php/jae/article/view/2067.