DUY, Pham Khanh; 						HIEP, Pham Cong.
 Online Classrooms in the Digital Era - Online Presence Through Learners’ Perception.
<strong>VNU Journal of Science: Education Research</strong>, [S.l.], v. 38, n. 1, mar. 2022.
ISSN 2588-1159.
Available at: &lt;<a href="https://js.vnu.edu.vn/ER/article/view/4595" target="_new">https://js.vnu.edu.vn/ER/article/view/4595</a>&gt;. Date accessed: 26 apr. 2024.
doi: <a href="https://doi.org/10.25073/2588-1159/vnuer.4595">https://doi.org/10.25073/2588-1159/vnuer.4595</a>.