Nguyen, Thi My Lien, and Thien Hung Ngu. “An Investigation into The Teachers’ Feedback to Students’ Answers in Lectures from TOEFL IBT”. VietTESOL International Convention Proceedings 1 (October 29, 2024). Accessed April 4, 2025. https://proceedings.viettesol.org.vn/index.php/vic/article/view/200.