@book { LeadingChange,
    title = "Leading Change",
    subtitle = "Wie Sie Ihr Unternehmen in acht Schritten erfolgreich verändern",
    author = "John P. {Kotter} and Werner {Seidenschwarz}",
    year = "2013",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1190385"
}