Hester, E. L. (1996). Successful marketing research: The complete guide to getting and using essential information about your customers and competitors. Wiley.
Chicago-viite (17. p.)Hester, Edward L. Successful Marketing Research: The Complete Guide to Getting and Using Essential Information About Your Customers and Competitors. New York: Wiley, 1996.
MLA-viite (8. p.)Hester, Edward L. Successful Marketing Research: The Complete Guide to Getting and Using Essential Information About Your Customers and Competitors. Wiley, 1996.
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