@book { DieGeliebtedesEarls,
    title = "Die Geliebte des Earls",
    subtitle = "Roman",
    author = "Hannah {Howell} and Elisabeth {Hartmann}",
    year = "2020",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/538634"
}