S. NAJEM, M.; M. SHEET, A. The effect of two sample for learning stimulus according to the academic time in the education collection and development of mental abilities and motivation of learning for the students of collage of sport education for some academic items. College of Basic Education Research Journal, [S. l.], v. 12, n. 3, p. 589–634, 2013. Disponível em: https://stats.uomosul.edu.iq/index.php/berj/article/view/38036. Acesso em: 26 oct. 2025.