@book { DerSandmannvonETAHoffmannRealittoderImagination,
    title = "Der Sandmann von E.T.A. Hoffmann. Realität oder Imagination?",
    author = "Anissa {Werdel}",
    year = "2020",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/945037"
}