Prasanti, D. ., and M. Amrullah. “Implementation of Online Learning During the Covid 19 Pandemic at SD Muhammadiyah 2 Sidoarjo: Implementasi Pembelajaran Daring Pada Masa Pandemi Covid 19 Di SD Muhammadiyah 2 Sidoarjo”. Proceedings of The ICECRS, vol. 10, Aug. 2021, pp. 25-27, doi:10.21070/icecrs20211049.