@book { DerSohndesPapstes,
    title = "Der Sohn des Papstes",
    subtitle = "Roman",
    author = "Christoph {Treutwein}",
    year = "2016",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/340913"
}