MAHMOUD, H. The Level Of Psychological Hardness Of A Sample Of Swimmers In Damascus Governorate. Tishreen University Journal -Medical Sciences Series, [S. l.], v. 39, n. 4, 2018. Disponível em: https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/3990. Acesso em: 4 may. 2024.