Zeithaml. (1990). Delivering quality service: Balancing customer perceptions and expectations. The Free Press.
Chicago Style (17th ed.) CitationZeithaml. Delivering Quality Service: Balancing Customer Perceptions and Expectations. New York: The Free Press, 1990.
MLA (8th ed.) CitationZeithaml. Delivering Quality Service: Balancing Customer Perceptions and Expectations. The Free Press, 1990.
Warning: These citations may not always be 100% accurate.