@book { HumanRessourceManagement,
    title = "Human Ressource Management",
    subtitle = "Gestaltungsoptionen im Rahmen der Personalpolitik (am Beispiel OBI Bau- und Heimwerkermärkte in Hamburg)",
    author = "Roland {Kessens}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832432829",
    url = "https://m.diplom.de/document/218968"
}