@book { DieNotwendigkeitvonSocialCommerce,
    title = "Die Notwendigkeit von Social Commerce",
    author = "Stefan {Schatt}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640930234",
    url = "https://www.hausarbeiten.de/document/172937"
}