Churchill, G. A. (1979). Marketing research: Methodological foundations (2d ed.). Hinsdale, Ill.: Dryden Press.
Παραπομπή Chicago StyleChurchill, Gilbert A. Marketing Research: Methodological Foundations. 2d ed. Hinsdale, Ill.: Dryden Press, 1979.
Παραπομπή MLAChurchill, Gilbert A. Marketing Research: Methodological Foundations. 2d ed. Hinsdale, Ill.: Dryden Press, 1979.
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