Greenberg, Paul CRM at the speed of light social CRM strategies, tools, and techniques for engaging your customers Paul Greenberg - 4th ed. - New York Mcgraw-Hill 2010 - xxvi, 662 p. ISBN: 0071590457 Subjects--Topical Terms: Customer relations--ManagementElectronic commerce LC Class. No.: HF5415.5 / .G74 2010 c. 1