@book { DasneueQualittsprfungsverfahren,
    title = "Das neue Qualitätsprüfungsverfahren",
    author = "Nicole {Ott}",
    year = "2020",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/944127"
}