Dyfyniad APA

Aaker, D. A., & Day, G. S. (2011). Marketing Research (10th.). John Wiley & Sons.

Dyfyniad Arddull Chicago

Aaker, David A., and George S. Day. Marketing Research. 10th. New Delhi: John Wiley & Sons, 2011.

Dyfyniad MLA

Aaker, David A., and George S. Day. Marketing Research. 10th. John Wiley & Sons, 2011.

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