@book { FundraisinginNonprofitOrganisationenderSozialenArbeit,
    title = "Fundraising in Nonprofit-Organisationen der Sozialen Arbeit",
    author = "Frank {Knaus}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832498535",
    url = "https://m.diplom.de/document/224970"
}