VAN NIEKERK, M.; SCHMIDT, L. The ecology of distance learning: Bridging the gap between university and student. South African Journal of Higher Education, [S. l.], v. 30, n. 5, p. 196–214, 2016. DOI: 10.20853/30-5-663. Disponível em: https://www.journals.ac.za/sajhe/article/view/663. Acesso em: 7 oct. 2025.