Ismail, Khalid, et al. “THE QUALITY ASSURANCE OF TEACHING AND LEARNING IN THE FACULTY OF BUSINESS AND ECONOMIC IN UNIVERSITI PENDIDIKAN SULTAN IDRIS”. International Business Education Journal, vol. 2, Dec. 2009, pp. 88-103, https://ejournal.upsi.edu.my/index.php/IBEJ/article/view/1538.