شيركو الجاف م. "The Relationship Between Personal Strengths and Mental Toughness and Scoring Accuracy in Football". College of Basic Education Research Journal, [S. l.], v. 19, n. 4, p. 797–815, 2023. DOI: 10.33899/berj.2023.181888. Disponível em: https://moss.uomosul.edu.iq/index.php/berj/article/view/39730. Acesso em: 26 oct. 2025.