@book { TheMarriageDeal,
    title = "The Marriage Deal",
    subtitle = "Verheiratet mit dem Millionär",
    author = "Sanja {Kellath}",
    year = "2023",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/1375330"
}