Παραπομπή APA

Boyd, H. W., Westfall, R. L., & Stasch, S. F. (1989). Marketing research: Text and cases (7th ed.). Irwin.

Παραπομπή Chicago Style

Boyd, Harper W., Ralph L. Westfall, και Stanley F. Stasch. Marketing Research: Text and Cases. 7th ed. Homewood, Ill.: Irwin, 1989.

Παραπομπή MLA

Boyd, Harper W., et al. Marketing Research: Text and Cases. 7th ed. Irwin, 1989.