@book { DaskleineAppartmentdesGlcks,
    title = "Das kleine Appartment des Glücks",
    subtitle = "Roman",
    author = "Steffi {von Wolff}",
    year = "2018",
    publisher = "jumpbooks",
    address = "München, Deutschland",
    url = "https://www.jumpbooks.de/document/454713"
}