Md. Shamim Mondol, and Mohammad Golam Mohiuddin. “Confronting Covid-19 With a Paradigm Shift in Teaching and Learning: A Study on Online Classes”. International Journal of Social, Political and Economic Research, vol. 7, no. 2, June 2020, pp. 231-47, doi:10.46291/IJOSPERvol7iss2pp231-247.