@misc{Haydn_Joseph_(1732-1809)_Violoncello,
 author={Haydn, Joseph (1732-1809)},
 howpublished={online},
 publisher={au Magasin de Musique de Breitkopf et Härtel},
 language={fre},
 title={Violoncello},
 type={druk muzyczny},
 keywords={nuty},
}