Tran, Yen, and Tran Thi Minh Hang. “Use of Posters to Promote Speaking Performance Among Non-English Majors at Thai Nguyen University of Education, Vietnam”. International Journal of Language and Literary Studies 3, no. 2 (June 29, 2021): 81–96. Accessed November 7, 2024. https://mail.ijlls.org/index.php/ijlls/article/view/585.