Thienbenja, Tiwa, and Wanchai Panjan. “The Development of a Training Program for Competency Enhancement for Raising the Level of Nong Chok District Community Products”. Ph.D. in Social Sciences Journal 10, no. 2 (August 29, 2020): 451–463. Accessed May 3, 2024. https://so05.tci-thaijo.org/index.php/phdssj/article/view/139946.