@book { TischManieren,
    title = "Tisch-Manieren",
    subtitle = "Im Restaurant. Beim Geschäftsessen. Zu Hause",
    author = "Nandine {Meyden}",
    year = "2019",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403149"
}