Achour, Meguellati, Nor Pujawati Md. Said, and Ali Boerhannoeddin. “Customer Loyalty: The Case of Mobile Phone Users in Universiti Utara Malaysia”. International Journal of Management Studies 18, no. 2 (December 29, 2011): 43–66. Accessed August 12, 2022. https://e-journal.uum.edu.my/index.php/ijms/article/view/10347.