@book { SocialMediaMarketingimB2BUnternehmen,
    title = "Social Media Marketing im B2B-Unternehmen",
    author = "Christina {Meyer}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656194750",
    url = "https://www.hausarbeiten.de/document/193987"
}