HAMID, Rimba; SENTRYO, Izlan; HASAN, Sakka. Online learning and its problems in the Covid-19 emergency period. Jurnal Prima Edukasia, [S. l.], v. 8, n. 1, p. 86–95, 2020. DOI: 10.21831/jpe.v8i1.32165. Disponível em: https://jurnal.uny.ac.id/index.php/jpe/article/view/32165. Acesso em: 7 jun. 2025.