@misc{NN_Portret,
 author={NN},
 howpublished={online},
 publisher={London Published by Hodgson VC. 10, Newgate St.},
 language={eng},
 language={lat},
 title={Portret Mikołaja Kopernika},
 type={grafika},
 keywords={Kopernik, Mikołaj (1473-1543) - ikonografia},
}