@book { DasGeheimnisderInselfreundinnen,
    title = "Das Geheimnis der Inselfreundinnen",
    author = "Monika {Detering} and Silke {Porath}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1174052"
}