WALDRON, M. W. Review of Distance Education and the Mainstream. Canadian Journal of Higher Education, [S. l.], v. 18, n. 3, p. 121–122, 1988. Disponível em: https://www.cjhe.test.sfulib7.publicknowledgeproject.org/index.php/cjhe/article/view/183051. Acesso em: 4 may. 2026.