@book { NellSweeneyunddieblutroteWahrheit,
    title = "Nell Sweeney und die blutrote Wahrheit",
    author = "P. B. {Ryan}",
    year = "2021",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/491392"
}