Hamed, Abu Bakar, Mohd Fauzwadi Mat Ali, Muhammad Hashim, and Hisham Sabri. 2005. “Kualiti Perkhidmatan Dan Kepuasan Pelanggan Dalam Perbankan Islam”. The Journal of Muamalat and Islamic Finance Research 2 (1):151-70. https://jmifr.usim.edu.my/index.php/jmifr/article/view/42.