VALLERAND, N. A Model for Evaluating Program Costs: A General View. Canadian Journal of Higher Education, [S. l.], v. 7, n. 2, p. 39–51, 1977. Disponível em: https://www.cjhe.test.sfulib7.publicknowledgeproject.org/index.php/cjhe/article/view/182725. Acesso em: 2 may. 2026.