TY - BOOK AU - Zeithaml,Valarie A. AU - Parasuraman,A. AU - Berry,Leonard L. TI - Delivering Quality Service : Balancing Customer Perceptions and Expectations SN - 9781439167281 U1 - 658.812 ZEI PY - 1990/// CY - New York, ; London PB - : Free Press, : Collier Macmillan KW - Customer services KW - Service industries KW - Quality control KW - Mathematical models N1 - Includes bibliographical references (p. 207-218) ER -