@book { DerEheCode,
    title = "Der Ehe-Code",
    author = "Nadine {Magg}",
    year = "2013",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/404151"
}