@book { DiemodernePersonalfhrunginderBauindustrie,
    title = "Die moderne Personalführung in der Bauindustrie",
    author = "Rüdiger {Kleinknecht}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832417260",
    url = "https://m.diplom.de/document/217595"
}