@misc{Gumplowicz_Ludwik_(1838-1909)_Der,
 author={Gumplowicz, Ludwik (1838-1909)},
 address={Innsbruck},
 howpublished={online},
 publisher={Wagner},
 language={ger},
 type={książka},
 title={Der Rassenkampf : soziologische Untersuchungen},
}