@misc{Ehrenberg_Hermann_(1858-1920)_Die,
 author={Ehrenberg, Hermann (1858-1920)},
 address={Leipzig},
 address={Berlin},
 howpublished={online},
 publisher={Giesecke & Devrient},
 language={ger},
 title={Die Kunst am Hofe der Herzöge von Preußen},
 type={książka},
}