SALEEM, Nadia; DIN, Aisha M; SADIQ, Saba; AHMED, Masroor. MDB as an Effective Platform of Communication between Students and Teachers A Study of the Virtual University of Pakistan. International Journal of Research in E-learning, [S. l.], v. 4, n. 2, p. 61–75, 2021. Disponível em: https://journals.us.edu.pl/index.php/IJREL/article/view/8353. Acesso em: 8 apr. 2025.