“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” (2021) Proceedings of The ICECRS, 10, pp. 25–27. doi:10.21070/icecrs20211049.