@book { CauseRelatedMarketingAsubstitutefordirectdonations,
    title = "Cause Related Marketing: A substitute for direct donations?",
    author = "Sebastian {Siebert}",
    year = "2014",
    publisher = "Anchor Academic Publishing",
    address = "Hamburg, Germany",
    url = "https://m.anchor-publishing.com/document/312681"
}