@book { FitfrPersonalentwicklung,
    title = "Fit für Personalentwicklung?",
    author = "Oliver {Bluszcz}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832441777",
    url = "https://m.diplom.de/document/219798"
}