کتاب های Roberts Phelps G.
Customer Relationship Management: How to Turn a Good Business into a Great One!
Graham Roberts-Phelps, 2001
Companies Don't Succeed People Do!: Ideas to Create Profits Through People
Graham Roberts-Phelps, 2001
Companies don’t succeed – people do! Ideas to create profits through people
Roberts-Phelps G., 2000
Customer Relationship Management
Roberts-Phelps G., 2008
Customer Relationship Management: How to Turn a Good Business into a Great One
Graham Roberts-Phelps, 2001
Customer Relationship Management: How to Turn a Good Business into a Great One
Graham Roberts-Phelps, 2001
Telephone Tactics
Graham Roberts-Phelps, 2001
The Concise Guide to Telephone Tactics
Graham Roberts-Phelps, 2004
