@book { RelationshipMarketingimFundraisingvonNonprofitOrganisationen,
    title = "Relationship Marketing im Fundraising von Nonprofit-Organisationen",
    author = "Thomas {Kraneis}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832453206",
    url = "https://m.diplom.de/document/220884"
}