Hamad, F. et al. 2023. Comparing Logistic Support and Race Organization and their Effect on Psychological Toughness of National Center for Gifted in Sports Players and League Club players. Journal of Physical Education. 35, 2 (Jun. 2023), 450–457. DOI:https://doi.org/10.37359/JOPE.V35(2)2023.1403.