Kumar, V., Aaker, D. A., & Day, G. S. (2002). Essentials of marketing research (2nd ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)Kumar, V., David A. Aaker, agus George S. Day. Essentials of Marketing Research. 2nd ed. New York: Wiley, 2002.
Lua MLA (8ú heag.)Kumar, V., et al. Essentials of Marketing Research. 2nd ed. Wiley, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.