@misc{Sowa_Janusz_Sport_2021,
 author={Sowa, Janusz},
 type={article},
 publisher={Jan Długosz University in Czestochowa},
 title={Sport in the State Police of the Silesian Voivodeship in the years 1922–1939},
 address={Częstochowa},
 year={2021},
 language={pol},
}