@book { MordimOpernhaus,
    title = "Mord im Opernhaus",
    author = "Dawn {Brookes} and Johanna {Ellsworth}",
    year = "2024",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/1506290"
}