PHONG-A-RAN, N.; SUPAWEENA LUKSUP , S. L.; CHAISODA, P. ENGLISH PROFICIENCY OF THAI UNDERGRADUATE STUDENTS USING CEFR IN KHONKAEN . Journal of Buddhist Education and Research (JBER), [S. l.], v. 5, n. 2, p. 160–172, 2019. Disponível em: https://so06.tci-thaijo.org/index.php/jber/article/view/242222. Acesso em: 1 oct. 2026.