@book { AmbushMarketingCleveresMarketing,
    title = "Ambush Marketing - Cleveres Marketing?!?",
    author = "Lina {Heintschel von Heinegg}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640585779",
    url = "https://www.hausarbeiten.de/document/147825"
}