@book { VerstehendePflegediagnostik,
    title = "Verstehende Pflegediagnostik",
    author = "Berta {Schrems}",
    year = "2018",
    publisher = "facultas",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/418348"
}