1. Customers Satisfaction Council, 1995. Customer Satisfaction Assessment Guide, Motorola University Press, Schaumburg, IL
2. Product Juggernauts: How Companies Mobilize to Generate a Stream of Market Winners;Deschamps,1995
3. AMA Handbook of Customer Satisfaction: A Complete Guide to Research Planning and Implementation;Dutka,1994
4. Customer and Market-Driven Quality Management;Edosomwan,1993
5. Measuring Customer Satisfaction;Gerson,1993