بهنام نقولا إ. Evaluating the Level of Psychological Stability among Workers in Sport and Technical Education Units and its Relation to Self-Achievement. College of Basic Education Research Journal, [S. l.], v. 8, n. 4, p. 348–395, 2009. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/39899. Acesso em: 27 oct. 2025.