Boyd, H. W., Westfall, R., & Stasch, S. F. (1989). Marketing research: Text and cases (7. ed.). Irwin.
Chicago Style (17th ed.) CitationBoyd, Harper W., Ralph Westfall, and Stanley F. Stasch. Marketing Research: Text and Cases. 7. ed. Homewood, Ill. [u.a.]: Irwin, 1989.
MLA (9th ed.) CitationBoyd, Harper W., et al. Marketing Research: Text and Cases. 7. ed. Irwin, 1989.
Warning: These citations may not always be 100% accurate.