Sulaiman, Junita, Faizal Amin Nur Yunus, and Wan Mohd Rashid Wan Ahmad. “Professionalism of Technical Teacher in Vocational Education: : Professional Knowledge That Contribute To A Teacher’s Effectiveness”. Online Journal for TVET Practitioners 4, no. 2 (October 30, 2019): 42–48. Accessed July 7, 2022. https://publisher.uthm.edu.my/ojs/index.php/oj-tp/article/view/5091.