A. Jalil, N. A. ., Madar, A. R., & Kassim, N. I. (2021). ADDIE Model Application for Development of Teaching Material Based on Flipped Learning for Lecturer’s in Polytechnic. Journal of Social Transformation and Regional Development, 2(3), 156-165. https://penerbit.uthm.edu.my/ojs/index.php/jstard/article/view/7693