@book { DieTochterderEwigenStadt,
    title = "Die Tochter der Ewigen Stadt",
    subtitle = "Historischer Roman",
    author = "Beate {Schaefer}",
    year = "2019",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/455738"
}