Valdez, Anabelie V., Jeffrey P. Villaver, and Analyn P. Guro. “Evaluating Synchronous, Asynchronous, and Hybrid E-Teaching and E-Learning Tools Amidst COVID 19 Pandemic”. Current Research in Language, Literature and Education Vol. 7 (July 1, 2022): 110–141. Accessed June 3, 2026. https://stm.bookpi.org/CRLLE-V7/article/view/7541.