Sihite, M., Supriyanto, S., Sitompul, D.P., Dalimunthe, D.M.J., Octavianus, H., Taslim, T., Dilham, A., Sipayung, R.C. and Dalimunthe, R.F. 2021. Online lectures during the COVID-19 pandemic : conceptual analysis. International journal of business, economics & management. 4, 1 (Jun. 2021), 256-261. DOI:https://doi.org/10.31295/ijbem.v4n1.1480.