@book { ViralesMarketingPotenzialeundGefahren,
    title = "Virales Marketing: Potenziale und Gefahren",
    author = "René {Kordes}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/296972"
}