@book { MitarbeiteraquisitionPersonalentwicklung,
    title = "Mitarbeiteraquisition Personalentwicklung",
    author = "Kurt {Marquardt}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832420888",
    url = "https://m.diplom.de/document/217923"
}