@book { MotivationamArbeitsplatzinTheorieundPraxis,
    title = "Motivation am Arbeitsplatz in Theorie und Praxis",
    author = "Wolfgang {Leitner}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832424992",
    url = "https://m.diplom.de/document/218294"
}