@book { EinflussmobilerEndgerteundSocialMediaaufdasCustomerRelationshipManagement,
    title = "Einfluss mobiler Endgeräte und Social Media auf das Customer Relationship Management",
    author = "Onur {Cengiz}",
    year = "2018",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/446399"
}