@misc{Kautsky_Karl_(1854-1938)_Ethik,
 author={Kautsky, Karl (1854-1938)},
 address={Stuttgart},
 howpublished={online},
 publisher={Verlag von J. Dietz},
 language={ger},
 type={książka},
 title={Ethik und materialistische Geschichtsauffassung},
}