., Istiqomah; PRASTUTI, Endang. Student Optimism Regarding Online Learning During the Covid-19 Pandemic. KnE Social Sciences, [S. l.], v. 4, n. 15, p. 187–194, 2021. DOI: 10.18502/kss.v4i15.8204. Disponível em: https://knepublishing.com/index.php/KnE-Social/article/view/8204. Acesso em: 1 jul. 2025.