Zeithaml, V. A. (1990). Delivering Quality Service. The Free Press.
Chicago Style (17th ed.) CitationZeithaml, Valarie A. Delivering Quality Service. The Free Press, 1990.
MLA (8th ed.) CitationZeithaml, Valarie A. Delivering Quality Service. The Free Press, 1990.
Warning: These citations may not always be 100% accurate.