@misc{Bender_Georg_(1848-1924)_Heimat,
 author={Bender, Georg (1848-1924)},
 address={Breslau},
 howpublished={online},
 publisher={Ferdinand Hirt},
 language={ger},
 type={książka},
 title={Heimat und Volkstum der Familie Koppernigk (Coppernicus)},
}