Bunga-mongkon, Nit, and Utumporn Kotwan. “The Effect of Student Leader Training on Developing Media Learning Process”. Ratchaphruek Journal 18, no. 2 (August 17, 2020): 54–61. accessed August 26, 2026. https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/234870.