@misc{Friedwald_Michał_Virtus,
 author={Friedwald, Michał},
 copyright={Biblioteka Gdańska PAN},
 howpublished={online},
 publisher={Nering, Melchior},
 language={lat},
 type={starodruki},
 title={Virtus invidiae victrix. Aetatis sua 53},
}