حنا إبراهيم ي. The Effect of Instructional Program in Modifying External Orientation of Achievement Responsibility to Internal at Students of Basic Education College. College of Basic Education Research Journal, [S. l.], v. 7, n. 4, p. 1–43, 2008. Disponível em: https://stats.uomosul.edu.iq/index.php/berj/article/view/38674. Acesso em: 26 oct. 2025.