@book { FeinrippundSchlagsahne,
    title = "Feinripp und Schlagsahne",
    subtitle = "Aus dem Leben einer Familienhelferin",
    author = "Liz {May}",
    year = "2016",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/316663"
}