Sawetwisut, N., and P. Koolnaphadol. “Learning Happiness Supporting Factors for Bangpleeratbamrung School Students, Bang Phli District, Samut Prakan Province”. STOU Academic Journal of Research and Innovation (Humanities and Social Science), vol. 6, no. 1, Feb. 2026, pp. 38-52, https://so04.tci-thaijo.org/index.php/InnovationStou/article/view/281402.