@book { LucreziaBorgiaTochterdesPapstes,
    title = "Lucrezia Borgia - Tochter des Papstes",
    author = "Hans {Schlagintweit}",
    year = "2021",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1158379"
}