M. Nurtanto, Z. . Arifin, H. . Sofyan, W. . Warju, and S. Nurhaji, “Development of Model for Professional Competency Assessment (PCA) in Vocational Education: Study of the Engine Tune-Up Injection System Assessment Scheme”, jtet, vol. 12, no. 2, pp. 34–45, Feb. 2020, Accessed: Jul. 23, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/JTET/article/view/5152