Zemke, Ron E-service : 24 ways to keep your customers when the competition is just a click away / Ron Zemke, Tom Connellan - New York : AMACOM, 2001 - viii, 341 p. : ill. ; 24 cm. Includes bibliographical references (p. 323-325) and index ISBN: 0814406068 Subjects--Topical Terms: Customer loyaltyInternet marketing