@misc{Usaba_Ungarisch_[ca,
 author={Usaba},
 title={Ungarisch blut},
 address={[s.l.]},
 year={[ca 1910]},
 language={hun},
 type={pocztówka},
 publisher={"Erkal"},
 keywords={Karty pocztowe -- 1900-1945, Karty pocztowe},
}