Othman, S. ., M. A. M. . Hussain, R. M. . Zulkifli, and M. S. . Saud. “On-the-Job Training in Vocational College: Issue and Improvement Plan”. International Journal of Learning, Teaching and Educational Research, vol. 21, no. 12, Dec. 2022, pp. 126-41, http://www.ijlter.net/index.php/ijlter/article/view/1483.