Hassan, Za’faran, and Abdul Raheem bin Mohamad Yusof. “Education Management: Educational Service Quality and Customer Satisfaction Index Amongst Public Higher Educational Institutions”. Asian Journal of Business and Management 3, no. 1 (February 15, 2015). Accessed May 20, 2022. https://ajouronline.com/index.php/AJBM/article/view/2319.