William G.Zikmund. (2007). Essential of Marketing Research (3rd.). Cengage Learning.
Chicago Edition CitationWilliam G.Zikmund. Essential of Marketing Research. 3rd. New Delhi: Cengage Learning, 2007.
Cita MLAWilliam G.Zikmund. Essential of Marketing Research. 3rd. Cengage Learning, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.