Balleras, J., Yippikun, C. ., Castro, R., & Prasertsak, A. . (2025). Developing a Standardized English Proficiency Test Based on the CEFR and Language Test Development Manual : (in progress). Journal of English Language and Linguistics, 6(2), 169–189. https://doi.org/10.62819/jel.2025.1007