Cita APA (7th ed.)

Boyd, H. W., & Westfall, R. L. (1977). Marketing research: Text and cases (4a. ed.). Richard D. Irwin.

Cita Chicago (17th ed.)

Boyd, Harper W., i Ralph L. Westfall. Marketing Research: Text and Cases. 4a. ed. Homewood: Richard D. Irwin, 1977.

Cita MLA (9th ed.)

Boyd, Harper W., i Ralph L. Westfall. Marketing Research: Text and Cases. 4a. ed. Richard D. Irwin, 1977.