طنش محمد; حريزي عبد الهادي. The role of psychological hardness in improving the skill performance of football players Afield study on the coaches of the wilayat of Awlad jalal. sports creativity, [S. l.], v. 13, n. 02, p. 91–112, 2025. Disponível em: https://journals.univ-msila.dz/index.php/JOSC/article/view/598. Acesso em: 4 feb. 2026.