APA استشهاد

Aaker, D. A. (1990). Marketing research (4th ed.). John Wiley & sons.

استشهاد بنمط شيكاغو

Aaker, David A. Marketing Research. 4th ed. New York: John Wiley & sons, 1990.

MLA استشهاد

Aaker, David A. Marketing Research. 4th ed. John Wiley & sons, 1990.