Dyfyniad APA
Boyd, H. W., & Westfall, R. L. (1999). Marketing research: Text and cases (7th ed.). AITBS Publishers.
Dyfyniad Arddull Chicago
Boyd, Harper W., and Ralph L. Westfall. Marketing Research: Text and Cases. 7th ed. New Delhi: AITBS Publishers, 1999.
Dyfyniad MLA
Boyd, Harper W., and Ralph L. Westfall. Marketing Research: Text and Cases. 7th ed. AITBS Publishers, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.