Chengwattanaphong S, Sikkhabundit S, Teerawittayalert P. THE MODEL ON DEVELOPMENT OF ACTIVITIES THAT ENHANCE THE VOLUNTEER PSYCHOLOGICAL CHARACTERISTICS OF STUDENTS UNDER THE INSTITUTE OF VOCATIONAL EDUCATION BANGKOK IN THE 21st FOR ADMINISTRATORS. JSBA [Internet]. 2021 May 2 [cited 2024 May 5];6(5):63-76. Available from: https://so04.tci-thaijo.org/index.php/JSBA/article/view/250058