Sangam W, Phengsawat W, Steannoppakao P. The Development of Training Curriculum of Student Leaders in Small-Size Secondary School under Secondary Educational Service Area Office 22. AJMBU [Internet]. 2019 Jul. 30 [cited 2024 Apr. 28];9(2):129-40. Available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/199611