Luck, D. J., & Day, G. S. (1981). Marketing research/5e. Prentice-Hall of India.
Chicago Style aipamenaLuck, David J., and George S. Day. Marketing Research/5e. New Delhi: Prentice-Hall of India, 1981.
MLA aipamenaLuck, David J., and George S. Day. Marketing Research/5e. Prentice-Hall of India, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.