ZIMMERMAN, Whitney Alicia. Key Issues in E-learning: Research and Practice. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 25, n. 2, 2011. Disponível em: https://www.ijede.ca/index.php/jde/article/view/763. Acesso em: 3 may. 2024.