Singh Anjali Devvrat และผู้แต่งคนอื่นๆ. (2022) Psychological & Physical and Social Factors Impacting Students' Happiness of Higher Educational Institutions: A Comparative Analysis of Pre and During Pandemic Scenario. <i>International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies</i>, <i>13</i>(6), 13A6H: 1-10.Singh Anjali Devvrat และผู้แต่งคนอื่นๆ. "Psychological & Physical and Social Factors Impacting Students' Happiness of Higher Educational Institutions: A Comparative Analysis of Pre and During Pandemic Scenario". International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies 13 (2022):13A6H: 1-10.Singh Anjali Devvrat และผู้แต่งคนอื่นๆ. Psychological & Physical and Social Factors Impacting Students' Happiness of Higher Educational Institutions: A Comparative Analysis of Pre and During Pandemic Scenario. TuEngr Group:ม.ป.ท. 2022.