@book { DieProvenalin,
    title = "Die Provençalin",
    subtitle = "Historischer Roman | Die Fehde zweier provenzalischer Adelsfamilien",
    author = "Frederik {Berger}",
    year = "2023",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1216281"
}