Sukgunya, Sompit, and Titiworada Polyiem. “The Development of a Problem Based Learning Management Teacher Development Program for Schools under the Office of the Secondary Educational Service Area 28”. Academic Journal of Mahamakut Buddhist University Roi Et Campus 10, no. 2 (May 13, 2021): ึ720–732. Accessed April 27, 2024. https://so01.tci-thaijo.org/index.php/AJMBU/article/view/246588.