1. Delivering Quality Service — Balancing Customer Perceptions and Expectations;Zeithaml,1990
2. Quality of Service — Making it Really Work;Edvardsson,1994
3. Service breakdowns: A study of critical incidents in an airline;Edvardsson;Int. J. Service Ind. Mgmt.,1992
4. Juran on Quality by Design — The New Steps for Planning Quality into Goods and Services;Juran,1992
5. Out of the Crisis;Deming,1986