Vonelayvanh, Phra Sounthone. “Needs Assessment for Enhancing Moral Ethical Development among Lower Secondary School Students”. RMUTK Journal of Liberal Arts 8, no. 2 (August 31, 2026): 99–115. accessed September 11, 2026. https://so02.tci-thaijo.org/index.php/larts-journal/article/view/277247.