Leesamphandh, Kanyaporn, and Sovaritthon Chansaengsee. 2023. “Evaluating the effectiveness of a student leadership training program for the early adolescent students in Kanchanaburi province, Thailand”. Kasetsart Journal of Social Sciences 44 (3):905–910. https://so04.tci-thaijo.org/index.php/kjss/article/view/267922.