Gao, Yanru, and Anchalee Chayanuvat. “The Effects of Problem-based Learning Approach on Junior High School Chinese Students’ English Speaking Skill”. Journal of Buddhist Education and Research (JBER) 10, no. 4 (December 31, 2024): 240–252. accessed August 28, 2026. https://so06.tci-thaijo.org/index.php/jber/article/view/279404.