@misc{Rączkowski_Józef_(1885–1951)._Red._Kalendarz_1916-1919,
 author={Rączkowski, Józef (1885–1951). Red.},
 copyright={Public Domain},
 address={Kraków ;},
 address={Wiedeń},
 howpublished={online},
 year={1916-1919},
 publisher={"Piast"},
 language={pol},
 type={Text},
 title={Kalendarz "Piasta" na Rok Pański 1919},
 URL={http://rcin.org.pl./Content/235476/WA248_222998_P-II-296_kal-piasta-1919_o.pdf},
 keywords={Polish calendars - 1901-1939},
}