@book { EinEarlzuMitternacht,
    title = "Ein Earl zu Mitternacht",
    subtitle = "Eine leidenschaftliche Regency Romance",
    author = "Olivia {Drake} and Nadine {Erler}",
    year = "2024",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/1517859"
}