PAŁUCKA, Daria. An outline of the impact of trade unions of professional athletes on the conditions of employment in professional sport of the United States. Journal of Education, Health and Sport, [S. l.], v. 7, n. 5, p. 808–818, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/4816. Acesso em: 7 feb. 2025.