Schoner, B., & Uhl, K. (1975). Marketing research: Information systems and decisions making (2nd ed.). john Wiley &sons.
Παραπομπή Chicago StyleSchoner, Bertram, και Kenneth Uhl. Marketing Research: Information Systems and Decisions Making. 2nd ed. London: john Wiley &sons, 1975.
Παραπομπή MLASchoner, Bertram, και Kenneth Uhl. Marketing Research: Information Systems and Decisions Making. 2nd ed. john Wiley &sons, 1975.
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