Hoang, T. D. ., T. L. Phan, and H. P. Le. “Non-English Major Students’ Perceptions Towards TOEIC Online Learning and Testing”. AsiaCALL Online Journal, vol. 12, no. 5, Oct. 2021, pp. 114-28, https://asiacall.info/acoj/index.php/journal/article/view/88.