Boyd, H. W., & Westfall, R. (1986). Marketing research: Text and cases (6th ed.). Irwin.
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Dyfyniad Arddull Chicago
Boyd, Harper W., and Ralph Westfall. Marketing Research: Text and Cases. 6th ed. Illinois: Irwin, 1986.
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Dyfyniad MLA
Boyd, Harper W., and Ralph Westfall. Marketing Research: Text and Cases. 6th ed. Irwin, 1986.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.