@misc{Hanon_Charles_Louis_(1820-1900)_Pianista,
 author={Hanon, Charles Louis (1820-1900)},
 howpublished={online},
 publisher={Arct Michał},
 language={pol},
 language={fre},
 title={Pianista wirtuoz : 57 ćwiczeń na fortepian = Le Pianiste Virtuose : 57 Exercices du piano},
}