KANUKA, Heather. A Principled Approach to Facilitating Distance Education: The Internet, Higher Education and Higher Levels of Learning. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 17, n. 2, p. 70–86, 2007. Disponível em: https://www.ijede.ca/index.php/jde/article/view/112. Acesso em: 4 may. 2024.