@book { Denkenachundwerdereich,
    title = "Denke nach und werde reich",
    subtitle = "Zeitlose Weisheit",
    author = "Napoleon {Hill} and Gill {Hasson} and Jana {Fritz}",
    year = "2026",
    publisher = "C.H.Beck",
    address = ", Deutschland",
    url = "https://vahlen.openpublishing.com/document/1782668"
}