@book { Das1x1desFhrensinderPflege,
    title = "Das 1 x 1 des Führens in der Pflege",
    author = "Barbara {Messer}",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403582"
}