@misc{Hlebionek_Marcin_(1974–_)_Nieznana_2021,
 author={Hlebionek, Marcin (1974– )},
 volume={59},
 editor={Institute of History of the Polish Academy of Sciences},
 copyright={Creative Commons Attribution BY-ND 4.0 license},
 address={Warszawa},
 journal={Studia Źródłoznawcze},
 howpublished={online},
 year={2021},
 publisher={Instytut Historii im. Tadeusza Manteuffla Polskiej Akademii Nauk},
 language={pol},
 type={Text},
 title={Nieznana pieczęć królowej Barbary Zapolyi na tle sfragistyki małżonek królów polskich z dynastii Jagiellonów},
 URL={http://www.rcin.org.pl/Content/232500/PDF/WA303_269224_B88-SZ-59-2021_Hlebionek.pdf},
 keywords={Jagiellons, queens’ seals, sphragistics, Zápolya House, heraldry, social status, identity, Jagiellon (dynasty), Barbara Zapolya, Queen, consort of Sigismund I, King of Poland, 1495-1515, Zápolya family, seals - Poland - history, heraldry - Poland - history, queens - Poland - history - sources},
}