MUGRIDGE, Ian. Growth and Structure of Distance Education. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 2, n. 2, p. 86–87, 1987. Disponível em: https://ijede.ca/index.php/jde/article/view/323. Acesso em: 4 may. 2024.