APA (7th ed.) Citation

Aaker, D. A., Day, G. S., & Kumar, V. (1998). Marketing research (6th ed.). Wiley.

Chicago Style (17th ed.) Citation

Aaker, David A., George S. Day, and V. Kumar. Marketing Research. 6th ed. New York: Wiley, 1998.

MLA (8th ed.) Citation

Aaker, David A., et al. Marketing Research. 6th ed. Wiley, 1998.