2004 - Killer Customers Tell the Good From the Bad and Crush Your Competitors (Paperback) ISBN-13: 9781591840428 ISBN-10: 1591840422 Genre: Business & Money ? 2003 - Angel Customers and Demon Customers Discover Which Is Which and Turbocharge Your Stock (Hardcover) ISBN-13: 9781591840077 ISBN-10: 1591840074 Genre: Business & Money 3 |