@book { DieSchattenvonAxenfordHall,
    title = "Die Schatten von Axenford Hall",
    subtitle = "Roman",
    author = "Charlotte {Keppel}",
    year = "2021",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1137950"
}