@misc{Päer_Ferdinando_(1771-1839)_Duetto,
 author={Päer, Ferdinando (1771-1839)},
 address={[s.l.]},
 howpublished={online},
 publisher={[s.n.]},
 language={ita},
 type={rękopis muzyczny},
 title={Duetto no non vedesti mai del Opera Sargino del Signor Paer},
 keywords={opera},
}