Manacap, Charismarie, et al. “Appropriating Technological Pedagogical Content Knowledge of Basic Education Teacher Using Online Learning Instruction”. International Journal of Multidisciplinary: Applied Business and Education Research, vol. 2, no. 11, Nov. 2021, pp. 1033-42, https://doi.org/10.11594/10.11594/ijmaber.02.11.05.