@book { OrganisationundFhrung,
    title = "Organisation und Führung",
    author = "Gerald {Durstmüller}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832451448",
    url = "https://m.diplom.de/document/220671"
}