@book { DiepassendeAnekdotezujedemAnlass,
    title = "Die passende Anekdote zu jedem Anlass",
    author = "Roland {Leonhardt}",
    year = "2010",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403372"
}