Hung PD, Ngan DTT, Mi NTT, Diem NLK, Tuan NA. THE IMPACT OF COVID-19 ON TEACHING AND LEARNING AT UNIVERSITIES. JST [Internet]. 2022 Mar. 30 [cited 2024 Nov. 21];(1). Available from: https://tapchi.bdu.edu.vn/index.php/jst/article/view/23