@book { CauseRelatedMarketing,
    title = "Cause Related Marketing",
    author = "Sylvie {Dahmen}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836605328",
    url = "https://m.diplom.de/document/225367"
}