@misc{Kopernik_Mikołaj_(1473–1543)_De,
 author={Kopernik, Mikołaj (1473–1543)},
 howpublished={online},
 publisher={Officina Henricpetrina},
 language={lat},
 type={starodruki},
 title={De revolutionibus orbium coelestium},
 keywords={Mikołaj Kopernik (1473-1543), astronomia 16w.},
}