APA (7th ed.) Citation

Kumar, V., Aaker, D. A., & Day, G. S. (2002). Essentials of marketing research (2. ed.). Wiley.

Chicago Style (17th ed.) Citation

Kumar, V., David A. Aaker, and George S. Day. Essentials of Marketing Research. 2. ed. New York [u.a.]: Wiley, 2002.

MLA (9th ed.) Citation

Kumar, V., et al. Essentials of Marketing Research. 2. ed. Wiley, 2002.