TAGG, Allan; DICKINSON, Julie. Tutor Messaging and Its Effectiveness in Encouraging Student Participation on Computer Conferences. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 10, n. 2, p. 33–55, 2008. Disponível em: https://ijede.ca/index.php/jde/article/view/238. Acesso em: 4 may. 2024.