@book { SocialSponsoringamBeispieldesgesellschaftspolitischenEngagementsderBMWGroup,
    title = "Social Sponsoring am Beispiel des gesellschaftspolitischen Engagements der BMW Group",
    author = "Pia {Gröger}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832441449",
    url = "https://m.diplom.de/document/219768"
}