Phacharadhamaroj, Pichayut, Hatairath Tubporn, and Akhawit Ruengrong. “Phleng So Lanna: The reflection of ethical values in human development”. Journal of Multidisciplinary Academic Research and Development (JMARD) 7, no. 1 (March 27, 2025): 106–122. accessed September 27, 2026. https://he02.tci-thaijo.org/index.php/JMARD/article/view/271536.