@misc{Rietz_Henryk_Johann,
 author={Rietz, Henryk},
 copyright={Rietz, Henryk},
 address={Berlin},
 howpublished={online},
 publisher={Akademie-Verlag},
 language={ger},
 type={artykuł},
 title={Johann Friedrich Hartknoch : 1740-1789},
}