journal, king prajadhipok’s institute. “King Prajadhipok’s Institute Journal (September 2019 - December 2019)”. King Prajadhipok’s Institute Journal 17, no. 3 (September 2, 2020): 5–155. accessed October 8, 2026. https://so06.tci-thaijo.org/index.php/kpi_journal/article/view/244225.