KAZEPIDES, A.C. Operant Conditioning in Education. Canadian Journal of Education/Revue canadienne de l’éducation, [S. l.], v. 1, n. 4, p. 53–68, 1976. Disponível em: https://cje-rce.ca/index.php/cje-rce/article/view/7896. Acesso em: 5 jul. 2026.