@book { DiebestenSexWitzeallerZeiten,
    title = "Die besten Sex-Witze aller Zeiten",
    author = "Joe G. {Hirschhagel}",
    year = "2015",
    publisher = "venusbooks",
    address = "München, Deutschland",
    url = "https://m.venusbooks.de/document/289356"
}