Wacharadhorntumrong P, Sirithadakunlaphat S, Chumphol N. The Development of Training Course Enhancing Leadership for Lower Secondary Students at Bansuanudomvittaya School, Chonburi Province. J Roi Et [Internet]. 2023 Apr. 29 [cited 2024 Apr. 20];17(1):221-30. Available from: https://so03.tci-thaijo.org/index.php/reru/article/view/254268