N. N. F. Mohd Isa and N. Ahmad, “Kepuasan Pelanggan Terhadap Kualiti Perkhidmatan Pos Malaysia dan Gdex di Skudai”, rmtb, vol. 2, no. 1, pp. 137–152, Jun. 2021, Accessed: Aug. 15, 2026. [Online]. Available: https://periodical.uthm.edu.my/index.php/rmtb/article/view/1987