Lua APA (7ú heag.)
Boyd, H. W., & Westfall, R. L. (1999). Marketing research: Text and cases (7th ed.). AITBS Publishers.
Lua i Stíl Chicago (17ú heag.)
Boyd, Harper W., agus Ralph L. Westfall. Marketing Research: Text and Cases. 7th ed. New Delhi: AITBS Publishers, 1999.
Lua MLA (9ú heag.)
Boyd, Harper W., agus Ralph L. Westfall. Marketing Research: Text and Cases. 7th ed. AITBS Publishers, 1999.
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