Saleem, Ibtisam. “Athletic Cognitive Motivation and Its Relationship to Perform Some Duties Within the Defensive Formations of the Region for Handball Players Aged (15-17) Years”. Modern Sport 19, no. 3 (November 3, 2020): 0087. Accessed May 1, 2024. https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/571.