Nguyen, Huu Nhon, and Duy Khoi Nguyen. “Vietnamese Learners’ Performance in The IELTS Writing Task 2: Problems, Causes, and Suggestions”. International Journal of TESOL & Education 2, no. 1 (January 15, 2022): 170–189. Accessed May 6, 2024. https://i-jte.org/index.php/journal/article/view/141.