@book { GerontopsychiatrischePflege,
    title = "Gerontopsychiatrische Pflege",
    author = "Dr. Elisabeth {Höwler}",
    year = "2020",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/921233"
}