Cita APA (7th ed.)

Boyd, H. W., & Westfall, R. (1972). Marketing research; text and cases (3d ed.). R. D. Irwin.

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

Boyd, Harper W., i Ralph Westfall. Marketing Research; Text and Cases. 3d ed. R. D. Irwin, 1972.