@book { SoziokonomischerKontextvonLeiharbeitinderBRD,
    title = "Sozio-ökonomischer Kontext von Leiharbeit in der BRD",
    author = "Thomas {Schupp}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/223532"
}