WESTBURY, Marilyn. The Effect of Elementary Grade Retention on Subsequent School Achievement and Ability. Canadian Journal of Education/Revue canadienne de l’éducation, [S. l.], v. 19, n. 3, p. 241–250, 1994. Disponível em: https://journals.sfu.ca/cje/index.php/cje-rce/article/view/2686. Acesso em: 27 apr. 2024.