Mahajar, A. J., J. M. Yunus, H. Yusof, and N. K. Yeop Yunos. “EFFECTIVENESS OF THE SCHOOLS’ INTERNAL AUDITORS IN PERAK”. International Business Education Journal, vol. 4, no. 1, Dec. 2011, pp. 63-76, https://ojs.upsi.edu.my/index.php/IBEJ/article/view/1339.