Raksa-Arayawetchakul, Wisanu, Prasert Pontin, and Noppadon Panyaweeratat. 2026. “Human Resource Development Based on the Principles of Tri-sikkhā in Municipalities of San Sai District, Chiang Mai Province”. MCU Haripunchai Review 10 (2):194-206. https://so04.tci-thaijo.org/index.php/JMHR/article/view/ba-014.