@book { NellSweeneyundderschwarzeFreitag,
    title = "Nell Sweeney und der schwarze Freitag",
    author = "P. B. {Ryan} and Alexandra {Kranefeld}",
    year = "2020",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/923841"
}