HUGHES, Andrew S.; KEITH, Joan J. Teacher Perceptions of an Innovation and Degree of Implementation. Canadian Journal of Education/Revue canadienne de l’éducation, [S. l.], v. 5, n. 2, p. 43–51, 1980. Disponível em: https://cje.journals.publicknowledgeproject.org/cje/index.php/cje-rce/article/view/8070. Acesso em: 19 sep. 2026.