@book { KommunikationalsBasisvonFhrungundManagement,
    title = "Kommunikation als Basis von Führung und Management",
    author = "Birgit {Bigga}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832461560",
    url = "https://m.diplom.de/document/221613"
}