Hatamleh, Mahmoud Aied, Faleh Sultan Abu Eid, Abdulmunem Abutabanjeh, Ahmad Abed Alwahab Akour, and Haya Mohamad Alqatami. “The Level of Psychological Hardiness Among Volleyball and Swimming Players in Jordan: A Comparative Study”. Migration Letters 21, no. 2 (November 20, 2023): 106–114. Accessed November 25, 2024. https://migrationletters.com/index.php/ml/article/view/5854.