@misc{Margis_Alfred_(18.._-_1913)_Walc,
 author={Margis, Alfred (18.. - 1913)},
 howpublished={online},
 publisher={Gebethner i Wolff},
 language={fre},
 title={Walc błękitny = Valse bleue},
 type={druk muzyczny},
 keywords={walc},
}