Hengsuwan, Manasikarn. “Changes in the Thai National Language Policy in the Education System from the Plaek Phibunsongkhram to Prayut Chan-o-cha Periods”. Journal of Thai Studies 14, no. 1 (March 14, 2023): 1–31. accessed September 10, 2026. https://so04.tci-thaijo.org/index.php/TSDJ/article/view/263954.