PUTRA, Miftah Fariz Prima et al. Fortaleza mental: ¿existen diferencias entre deportistas y no deportistas, niveles educativos y género? (Mental toughness: are there differences between athletes and non-athletes, education levels, and gender?). Retos, [S. l.], v. 58, p. 516–521, 2024. DOI: 10.47197/retos.v58.107330. Disponível em: http://revistaretos.org/index.php/retos/article/view/107330. Acesso em: 12 jan. 2026.