@misc{Gluck_Christoph_Willibald_von_(1714-1787)_Echo,
 author={Gluck, Christoph Willibald von (1714-1787)},
 howpublished={online},
 publisher={Des Lauriers},
 language={fre},
 title={Echo et Narcisse, drame lyrique en trois actes...},
 type={druk muzyczny},
}