Gorton, K. (1983). Low-cost marketing research: A guide for small businesses. Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGorton, Keith. Low-cost Marketing Research: A Guide for Small Businesses. Chichester: Wiley, 1983.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGorton, Keith. Low-cost Marketing Research: A Guide for Small Businesses. Wiley, 1983.
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