DIMYATI, Dimyati; SUSANTO, Ermawan; PURWANTO, Joko. The Contribution of Self-Confidence to Mental Toughness Among Sport-Class Student-Athletes. Sportify Journal, [S. l.], v. 5, n. 2, p. 213–225, 2025. DOI: 10.36312/sj.v5i2.5378. Disponível em: https://journal-center.litpam.com/index.php/sfj/article/view/5378. Acesso em: 21 oct. 2026.