DANIEL, John Sagar. Open Universities: Old Concepts and Contemporary Challenges. The International Review of Research in Open and Distributed Learning, [S. l.], v. 20, n. 4, 2019. DOI: 10.19173/irrodl.v20i3.4035. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/4035. Acesso em: 24 jun. 2024.