@book { DieRolledesInternetinderMarketingkommunikation,
    title = "Die Rolle des Internet in der Marketingkommunikation",
    author = "Franz-Philippe {Przybyl}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832435516",
    url = "https://m.diplom.de/document/219212"
}