LEŚNIEWSKA, Aleksandra; STOSIK, Aneta; ŁASIŃSKI, Gabriel. THE EFFECTIVENESS OF THE POLISH SPORT FEDERATIONS IN ATHLETES’ OPINION. Journal of Positive Management, [S. l.], v. 9, n. 2, p. 34–55, 2019. DOI: 10.12775/JPM.2018.141. Disponível em: https://apcz.umk.pl/JPM/article/view/JPM.2018.141. Acesso em: 1 jul. 2025.