6Keaveney,S.M.Customer switching behavior in service industries:an explorato~ study.Journal of Marketing, 1995.
7Cronin J Jr., Steven A Taylor, Measuring Service Quality:A Reexamination and Extention.Journal of Marketing, 1992,(56).
8Parasuraman,a.Zeithaml V.A and Berry. L.LA Conceptual Model of Service Quality and Its implication for Future Research[J]. Journal of Marketing, 1985.