@book { SozialeMedienimRahmendesOnlineMarketing,
    title = "Soziale Medien im Rahmen des Online-Marketing",
    author = "Rüdiger {Klemm}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656103813",
    url = "https://www.hausarbeiten.de/document/187170"
}