Aditya Hartini, and M. Ihsan Ramadhani. “Analysis Of Online Learning Implementation In Schools During The Covid-19 Pandemic”. Journal of Sustainable Development Science 4, no. 1 (June 23, 2022): 20-23. Accessed October 18, 2024. http://ejournal.undwi.ac.id/index.php/jsds/article/view/1261.