GARRISON, D. Randy. Andragogy, Learner-Centredness and the Educational Transaction at a Distance. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 3, n. 2, p. 123–127, 1988. Disponível em: https://www.ijede.ca/index.php/jde/article/view/553. Acesso em: 5 mar. 2024.