Greenberg, P., & Forword by Benioff, M. (2010). CRM At the Speed of Light: Social CRM Strategies, Tools and Techniques for Engaging Your Customers (4th ed.). Tata McGraw Hill Education Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Greenberg, Paul, agus Marc Forword by Benioff. CRM At the Speed of Light: Social CRM Strategies, Tools and Techniques for Engaging Your Customers. 4th ed. New Delhi: Tata McGraw Hill Education Pvt. Ltd, 2010.
Lua MLA (9ú heag.)Greenberg, Paul, agus Marc Forword by Benioff. CRM At the Speed of Light: Social CRM Strategies, Tools and Techniques for Engaging Your Customers. 4th ed. Tata McGraw Hill Education Pvt. Ltd, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.