OZTOK, Murat; BRETT, Clare. Social Presence and Online Learning: A Review of Research. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 25, n. 3, 2011. Disponível em: https://ijede.ca/index.php/jde/article/view/758. Acesso em: 3 may. 2024.