TAHA, D. A. International References for Researchers in Distance Learning and University Dropouts. مجلة جامعة القدس المفتوحة للبحوث الإنسانية والاجتماعية, [S. l.], n. 1, 2017. Disponível em: https://journals.qou.edu/index.php/jrresstudy/article/view/469. Acesso em: 29 2024.