8A. Parasuraman, V. A. Zeithaml, and L. L. Berry. SERVQUAL: A multiple-item scale for measuring consumer perceptions of service quality. Journal of Retailing [ J ]. vol. 64, noll Spring 1988, P12 - 40.
9Cronin J. J. Jr, Taylor S. A.. SERVPERF versus SERVQUAL: Reconciling performance-based and perception- minus-expectations measurement of service quality. Journal of Marketing[ J ]. 1994, (58) : 125 - 135.