ZIRKIN, Barbara; SUMLER, David. Interactive or Non-interactive?: That Is the Question!!!. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 10, n. 1, p. 95–112, 2008. Disponível em: https://www.ijede.ca/index.php/jde/article/view/230. Acesso em: 4 apr. 2026.