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 September 19, 2024. http://43.243.142.146/index.php/jsds/article/view/1261.