@misc{Königsberg_E._Traumgold,
 author={Königsberg E.},
 howpublished={online},
 publisher={Adolf Kunz},
 language={ger},
 type={druk muzyczny},
 title={Traumgold : Polka-Mazurka : [Op. 30]},
 keywords={polka-mazurka, 19 w.},
}