@book { DieGeliebtedesProphetenBand4,
    title = "Die Geliebte des Propheten - Band 4",
    subtitle = "Roman",
    author = "Mattias {Gerwald}",
    year = "2015",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/295282"
}