Yatigammana, Kaushalya, and Gamini Wijayarathna. “Students’ Perceptions of Online Lecture Delivery Modes: Higher Education During Covid-19 Pandemic and Beyond”. International Journal of Emerging Technologies in Learning (iJET), vol. 16, no. 21, Nov. 2021, pp. pp. 58-73, doi:10.3991/ijet.v16i21.25305.