Phong-a-ran, Nathaporn, Supaweena Luksup Supaweena Luksup, and Pornpalin Chaisoda. “ENGLISH PROFICIENCY OF THAI UNDERGRADUATE STUDENTS USING CEFR IN KHONKAEN”. Journal of Buddhist Education and Research 5, no. 2 (December 12, 2019): 160–172. Accessed April 26, 2024. https://so06.tci-thaijo.org/index.php/jber/article/view/242222.