Zemke, Ron. E-Service : 24 Ways to Keep Your Customers-When the Competition is Just a Click Away / Ron Zemke - New York : Amacom, 2001 - 341 p : ill ISBN: 0814406068 / 995 Subjects--Topical Terms: Customer loyalty.Internet marketing. LC Class. No.: HD5415.525 / Z46 E3 2001