LEHIB AHMED SHAKER. The effect of a psychological counseling program using motivation techniques to improve the level of some defensive skills in volleyball. Modern Sport, [S. l.], v. 18, n. 1, p. 131–140, 2019. Disponível em: https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1610. Acesso em: 2 apr. 2025.