Irej Zainab Javed, Hania Ijaz, Juwayria Omar, Sohaib Ahmad, Daniyal Tariq, Zoha Aziz, Rimsha Shahbaz, and Nida Khaliq. 2022. “Happiness Index of Undergraduate Students of Air University, Islamabad a Cross Section Study”. BMC Journal of Medical Sciences 2 (2):64-67. https://bmcjms.org/index.php/bmcj/article/view/14.