@book { CrossmediaKampagnen,
    title = "Crossmedia-Kampagnen",
    author = "Rebekka {Sauter}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842805842",
    url = "https://m.diplom.de/document/224294"
}