@book { MrchenimUnterricht,
    title = "Märchen im Unterricht",
    author = "Nicola {Unger}",
    year = "1997",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832402433",
    url = "https://m.diplom.de/document/216189"
}