Kuswantoro AV, Amrullah M. Learning at SMA Muhammadiyah 4 Porong during The Pandemic Covid 19: Pembelajaran di SMA Muhammadiyah 4 Porong dimasa Pandemi Covid 19. icecrs [Internet]. 2021 Oct. 6 [cited 2025 Sep. 18];10. Available from: https://icecrs.umsida.ac.id/index.php/icecrs/article/view/1179