@book { EinflussmobilerEndgerteundSocialMediaaufdasCustomerRelationshipManagement, title = "Einfluss mobiler Endgeräte und Social Media auf das Customer-Relationship-Management", author = "Jasmina {Nickel}", year = "2018", publisher = "GRIN Verlag", address = "München, Germany", url = "https://www.hausarbeiten.de/document/421225" }