HILTON III, John Levi. Cost-savings achieved in two semesters through the adoption of open educational resources. Classic: An OJS Theme Demo, [S. l.], v. 1, n. 3, 2018. Disponível em: https://ojs.publishoa.publicknowledgeproject.org/index.php/classic/article/view/815. Acesso em: 8 apr. 2026.