Tull, D. S. (1980). Marketing research: Measurement and method: a text with cases. Macmillan.
Čikaški stil citiranjaTull, Donald S. Marketing Research: Measurement and Method: A Text with Cases. New York: Macmillan, 1980.
MLA način citiranjaTull, Donald S. Marketing Research: Measurement and Method: A Text with Cases. Macmillan, 1980.
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