A STUDY OF MENTAL TOUGHNESS AMONG PUGILISTS WITH RESPECT TO THEIR LEVEL OF PARTICIPATIONS. Journal of Research Administration, [S. l.], v. 3, n. 2, p. 12–28, 2021. Disponível em: https://journlra.org/index.php/jra/article/view/44.. Acesso em: 18 oct. 2026.