Aaker, D. A., Kumar, V., & Day, G. S. (2001). Marketing research (7th ed.). New York: John Wiley and Sons.
Trích dẫn kiểu ChicagoAaker, David A., V. Kumar, và George S. Day. Marketing Research. 7th ed. New York: John Wiley and Sons, 2001.
Deismireacht MLAAaker, David A., V. Kumar, và George S. Day. Marketing Research. 7th ed. New York: John Wiley and Sons, 2001.
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