ALAVI, Sayyed Mohammad; TAGHIZADEH, Mahboubeh. Cognitive Presence in A Virtual Learning Community: An EFL Case. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 27, n. 1, 2013. Disponível em: https://www.ijede.ca/index.php/jde/article/view/818. Acesso em: 7 dec. 2024.