Thamvaja, Wilai. “The Process of Preparing Thai Speech Training Drills to Improve Thai Speech of Chinese Students”. Academic and Research Journal of Liberal Arts (Online) 15, no. 2 (December 24, 2020): 1–12. accessed September 28, 2026. https://so04.tci-thaijo.org/index.php/larhcu/article/view/244803.