Cita APA (7th ed.)

Boyd, H. W., & Westfall, R. L. (1972). Marketing research: Text and cases (3rd ed.). R. D. Irwin.

Cita Chicago (17th ed.)

Boyd, Harper W., i Ralph L. Westfall. Marketing Research: Text and Cases. 3rd ed. Homewood, Ill: R. D. Irwin, 1972.

Cita MLA (9th ed.)

Boyd, Harper W., i Ralph L. Westfall. Marketing Research: Text and Cases. 3rd ed. R. D. Irwin, 1972.