SIPAYUNG, R.; SIHOTANG, D. O.; LUMBAN BATU, J. S. PERSEPSI GURU TERHADAP EFEKTIVITAS PEMBELAJARAN ONLINE DI MASA PANDEMI COVID-19. Jurnal Ilmiah Aquinas, [S. l.], v. 4, n. 2, p. 311–321, 2021. DOI: 10.54367/aquinas.v4i2.1307. Disponível em: https://ejournal.ust.ac.id/index.php/Aquinas/article/view/1307. Acesso em: 4 dec. 2024.