Sulaiman J, Yunus FAN, Wan Ahmad WMR. Professionalism of Technical Teacher in Vocational Education: : Professional Knowledge That Contribute To A Teacher’s Effectiveness. oj-tp [Internet]. 2019 Oct. 30 [cited 2024 May 3];4(2):42-8. Available from: https://publisher.uthm.edu.my/ojs/index.php/oj-tp/article/view/5091