@misc{Gumowski_Marian_(1881-1974)_Mennica,
 author={Gumowski, Marian (1881-1974)},
 address={Warszawa},
 address={Toruń},
 howpublished={online},
 publisher={TNT},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={Mennica bydgoska},
 type={książka},
 keywords={Bydgoszcz, mennice},
}