@book { DieErfolgsstrategievonToyota,
    title = "Die Erfolgsstrategie von Toyota",
    author = "Marcel {Rockstedt}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836615099",
    url = "https://m.diplom.de/document/229113"
}