Pabhassaro (Dong Mesree), Phrakru Siripapassarakun, Somdet Namket, and Boonsong Sinthunok. “Cultivating Volunteer Spirit and Conscience of Moral and Ethical Organization in Society”. Journal of Modern Learning Development 8, no. 7 (July 30, 2023): 383–396. accessed September 11, 2026. https://so06.tci-thaijo.org/index.php/jomld/article/view/260796.