@misc{Barth_Carl_Portret,
 author={Barth, Carl},
 howpublished={online},
 publisher={Eigenthum & Verlag des Bibl.[iographischen] Instituts in Hildburghausen},
 language={ger},
 language={lat},
 title={Portret Mikołaja Kopernika},
 type={grafika},
 keywords={Kopernik, Mikołaj (1473-1543) - ikonografia},
}