AWAD, Saif Al-Din Daham. Construction and Standardization of a Psychological Hardiness Scale for Employees of Sub-Federations in Volleyball. Kufa Journal of Physical Education Sciences, Kufa, Najaf, Iraq, v. 1, n. 8, p. 204–222, 2026. Disponível em: https://journal.uokufa.edu.iq/index.php/kjpes/article/view/22993. Acesso em: 28 may. 2026.