Hamdan, N., Tze Kiong, T., Mei Heong, Y., Masran, S. H., Md Yunos, J., Mohamad, M. M., Hj Azid, N., Othman, W., Hanapi, Z., Azman, M. N. A., Haris, M. H. M., & Shafei, S. (2019). An Effectiveness of High Order Thinking Skills (HOTS) Self-Instructional Manual for Students’ Assignment Achievement. Journal of Technical Education and Training, 11(1). https://penerbit.uthm.edu.my/ojs/index.php/JTET/article/view/3234