Yuanjai, W., and C. Gampper. “A Study of Taylor Swift’s Pop Songs for EFL Learners: Categorizing Words Based on the Oxford 3000 and 5000 Word Lists and CEFR Levels”. LEARN Journal: Language Education and Acquisition Research Network, vol. 18, no. 1, Jan. 2025, pp. 212-27, doi:10.70730/TXBB1055.