@book { SponsoringimAmateurbereich,
    title = "Sponsoring im Amateurbereich",
    author = "André {Wöber}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832442811",
    url = "https://m.diplom.de/document/219352"
}