@book { DerPrinzunddieSpionin,
    title = "Der Prinz und die Spionin",
    subtitle = "Roman",
    author = "Sebastian {Thiel}",
    year = "2017",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/344429"
}