@book { Mitarbeiterbefragung,
    title = "Mitarbeiterbefragung",
    author = "Marco {Schmietow}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832466985",
    url = "https://m.diplom.de/document/222073"
}