@book { MarketingimOuternetWaskommtnachSocialMedia,
    title = "Marketing im Outernet: Was kommt nach Social Media?",
    author = "Tom {Rosenkranz}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/296713"
}