ROLAK, B.; BUDNIK-PRZYBYLSKA, D. CROSSFIT – mental training. Case study. Journal of Education, Health and Sport, [S. l.], v. 7, n. 8, p. 636–663, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/4802. Acesso em: 28 mar. 2024.