Ghavifekr, S., M. S. Ibrahim, K. Chellapan, K. Sukumaran, and A. Subramaniam. “INSTRUCTIONAL LEADERSHIP PRACTICES OF PRINCIPAL IN VOCATIONAL AND TECHNICAL COLLEGE: TEACHERS’ PERCEPTION”. MOJEM: Malaysian Online Journal of Educational Management, vol. 3, no. 1, Sept. 2017, pp. 48-67, https://mojem.um.edu.my/index.php/MOJEM/article/view/6094.