@misc{Witzleben_Ferdinand_A.von_(1800-1859)_Die,
 author={Witzleben, Ferdinand A.von (1800-1859)},
 howpublished={online},
 publisher={bei Carl Brüggemann},
 language={ger},
 type={opracowanie historyczne},
 title={Die Geschichte Polens},
 keywords={historia Polski},
}