Islam, M. Z., R. Anzum, Md. Norullah, and A. Jahan. “CORONAVIRUS DISEASE (COVID-19) AND UNEXPECTED WORLD HEALTH CRISIS”. Journal of Asian and African Social Science and Humanities, vol. 6, no. 2, June 2020, pp. 43-49, https://aarcentre.com/ojs3/index.php/jaash/article/view/208.