The Influence of Physical Self-Concept and Mental Toughness on Sports Performance of Student-Athletes. Nexus International Journal of Science and Education, [S. l.], v. 1, n. 2, 2024. DOI: 10.5281/6mt6qg84. Disponível em: http://nijse.org/index.php/home/article/view/112.. Acesso em: 19 sep. 2024.