@misc{Gerson_Jean_de_(1363-1429)_Opera.,
 author={Gerson, Jean de (1363-1429)},
 address={[Köln]},
 howpublished={online},
 publisher={Koelhoff, Johann ( -1493). Druk.},
 language={lat},
 title={Opera. Ps. 2},
 keywords={inkunabuły, Kolekcje Piastowskie, 15 w.},
}