Vongkumjan, Pimnipa. “Development on Buddhist Teaching (Threefold training) with Buddhist Activities of The Demonstration School of Ramkhamhaeng University (Secondary Level)”. Journal of Modern Learning Development 5, no. 2 (April 29, 2020): 1–11. accessed October 2, 2026. https://so06.tci-thaijo.org/index.php/jomld/article/view/241271.