@book { FhrungdurchMotivation,
    title = "Führung durch Motivation",
    author = "Gerhard {Comelli} and Lutz {Rosenstiel} and Friedemann W. {Nerdinger}",
    year = "2014",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220921"
}