SPENCER, Bruce. Removing Barriers and Enhancing Openness: Distance Education as Social Adult Education. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 10, n. 2, p. 87–104, 2008. Disponível em: https://ijede.ca/index.php/jde/article/view/237. Acesso em: 24 nov. 2024.