@book { ChangeManagementfrFhrungskrfte, title = "Change Management für Führungskräfte", subtitle = "Eine Praxisanleitung zur betrieblichen Transformation", author = "Michael {Frei}", year = "2018", publisher = "Vahlen", address = "München, Deutschland", url = "https://vahlen.openpublishing.com/document/1221041" }