Petruska, Robert Gemba walks for service excellence : the step-by-step guide for identifying service delighters / Robert Petruska - Boca Raton, FL : Taylor & Francis, c2012 - xiv, 85 p. : ill. (some col.), photos ; 28 cm. + 1 CD-ROM Includes index ISBN: 9781439886748 Subjects--Topical Terms: Customer servicesOrganizational effectivenessCustomer relations