ARMENGOL, Miguel Casas. Distance Education: A Spectrum of Case Studies. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 6, n. 2, p. 81–82, 1991. Disponível em: https://ijede.ca/index.php/jde/article/view/406. Acesso em: 29 apr. 2024.