Onwanya Sriwongsa, Apisak Sukying. Overcoming Challenges: Implementing the CEFR in Thai Secondary School English Classrooms. JELTAL [Internet]. 2024 Jul. 30 [cited 2026 Apr. 21];6(3):06-13. Available from: https://al-kindipublishers.org/index.php/jeltal/article/view/7425