Zikmund, W. G. (1999). Essentials marketing research. Fort Worth, TX: Dryden Press.
Trích dẫn kiểu ChicagoZikmund, William G. Essentials Marketing Research. Fort Worth, TX: Dryden Press, 1999.
Deismireacht MLAZikmund, William G. Essentials Marketing Research. Fort Worth, TX: Dryden Press, 1999.
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