K. Micabalo, W. M. Poliquit, E. Ibañez, R. Pabillaran, C. Malait, and J. Cano, “The Adoption of Online Learning during the Pandemic: Issues, Challenges, and Future Directions”, IRJ, vol. 17, no. 1, pp. 24–42, Oct. 2021, doi: 10.7719/irj.v17i1.750.