APPAVOO, P. Open and Distance Learning: An Unavoidable Pillar in the Building of a Knowledge Society. Progressio, [S. l.], v. 40, n. 1 & 2, p. 15 pages, 2018. DOI: 10.25159/0256-8853/4712. Disponível em: https://unisapressjournals.co.za/index.php/Progressio/article/view/4712. Acesso em: 6 may. 2024.