Thi Tran, T., and A. Sukying. “Overcoming Barriers: Enhancing English Adverbial Mastery among EFL Learners”. NIDA Journal of Language and Communication, vol. 29, no. 46, June 2025, pp. 46-66, https://so04.tci-thaijo.org/index.php/NJLC/article/view/280620.