Suprapmanto, Joko, and Utomo. “Analysis of Online Learning Problems During The Covid-19 Pandemic and Their Solutions”. Jurnal BELAINDIKA (Pembelajaran dan Inovasi Pendidikan) 3, no. 2 (August 21, 2021): 15-19. Accessed April 27, 2024. https://belaindika.nusaputra.ac.id/article/view/70.