@book { TauscheSchwestergegenGummibrchen,
    title = "Tausche Schwester gegen Gummibärchen",
    author = "Gisela {Walitzek}",
    year = "2016",
    publisher = "Bedey Media GmbH",
    address = "Hamburg, Deutschland",
    url = "https://kaderaverlag.openpublishing.com/document/317945"
}