Abubaker ن. . challenges of using virtual and concurrent e-learning in the faculties of Sebha University. Journal of Human Sciences, [S. l.], v. 19, n. 3, p. 15–22, 2021. DOI: 10.51984/johs.v19i3.1211. Disponível em: https://sebhau.edu.ly/journal/johs/article/view/1211. Acesso em: 3 may. 2024.