@book { DieMetamorphosenimSandmannvonETAHoffmann,
    title = "Die Metamorphosen im Sandmann von E.T.A. Hoffmann",
    author = "Nora {Gielke}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640175901",
    url = "https://www.hausarbeiten.de/document/116026"
}