@book { DasFhrungsverstndnisderdeutschenSpitzenmanager,
    title = "Das Führungsverständnis der deutschen Spitzenmanager",
    author = "Andreas {Bunz}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100049"
}