@book { KundenbindungimWeb20,
    title = "Kundenbindung im Web 2.0",
    author = "Sonja {Adomeit}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836610636",
    url = "https://m.diplom.de/document/225637"
}