Thang, N.T. et al. 2022. HAPPINESS INDICATOR OF STUDENTS OF VNU UNIVERSITY OF LANGUAGES AND INTERNATIONAL STUDIES DURING COVID-19 PANDEMIC LOCKDOWN IN HANOI, VIETNAM. VNU Journal of Foreign Studies. 38, 4 (Aug. 2022), 76–86. DOI:https://doi.org/10.25073/2525-2445/vnufs.4861.