@book { DieRollederModemarkeheuteundinZukunft,
    title = "Die Rolle der Modemarke heute und in Zukunft",
    author = "Andrea {Ruhland}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832473679",
    url = "https://m.diplom.de/document/222657"
}