@book { DasGeheimnisdesPerlenohrrings,
    title = "Das Geheimnis des Perlenohrrings",
    author = "Nicole C. {Vosseler}",
    year = "2023",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1333946"
}