Prasanti, Dwi, and Muhlasin Amrullah. “Implementation of Online Learning During the Covid 19 Pandemic at SD Muhammadiyah 2 Sidoarjo”. Proceedings of The ICECRS 100 (August 5, 2021): 25-27. Accessed November 23, 2024. https://icecrs.umsida.ac.id/index.php/icecrs/article/view/1049.