@book { EventMarketingMglichkeitenChancenRisiken,
    title = "Event Marketing - Möglichkeiten, Chancen, Risiken",
    author = "Julia {Hansmeier}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638586726",
    url = "https://www.hausarbeiten.de/document/67936"
}