التميمي د. إ. " م. ر. "علي. Failure at School repetition: Causes and treatment. Journal of Al-Quds Open University for Humanities and Social Studies, [S. l.], v. 2, n. 34, 2017. Disponível em: https://journals.qou.edu/index.php/jrresstudy/article/view/775. Acesso em: 3 jul. 2024.