Lee, M. F., S. N. Mohd Sohod, and & A. Ab Rahman. “Exploring the Mastery Level of Critical Thinking and Problem Solving Skill Among the Technical Undergraduate”. Journal of Technical Education and Training, Vol. 11, no. 3, Nov. 2018, https://publisher.uthm.edu.my/ojs/index.php/JTET/article/view/3061.