1. Social Indicators of Perceived Life Quality;Andrews;Social Indicators Research,1974
2. Marketers Discover What “Quality” Really Means;Bertrand;Business Marketing,1987
3. Quality is Free;Crosby,1979
4. Service Firms: Interdependence of External and Internal Marketing Strategies;Flipo;European Journal of Marketing,1986
5. Developing Service Quality: Some Managerial Inplications;Grönroos,1986