@book { PatientinDeutschland,
    title = "Patient in Deutschland",
    subtitle = "Verraten und verkauft",
    author = "Gaby {Guzek}",
    year = "2010",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403401"
}