@book { ZusammenhangzwischenFhrungsverhaltenundmessbarerPerformance,
    title = "Zusammenhang zwischen Führungsverhalten und messbarer Performance",
    author = "Ralf {Keim}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101322"
}