@book { SECRETUMDieSchattendesVatikans,
    title = "SECRETUM - Die Schatten des Vatikans",
    author = "Rita {Monaldi} and Francesco {Sorti} and Annette {Kopetzki}",
    year = "2020",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/902677"
}