@book { DerTrendzumEvent,
    title = "Der Trend zum Event",
    author = "Daniela {Vomend}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640981458",
    url = "https://www.hausarbeiten.de/document/176749"
}