@book { KultmarketingimInternet,
    title = "Kultmarketing im Internet",
    author = "Georg {Öhler}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832445805",
    url = "https://m.diplom.de/document/220158"
}