Luck, D. (1987). Marketing Research (7th.). Prentice Hall of India.
Chicago Style aipamenaLuck, David. Marketing Research. 7th. New Delhi: Prentice Hall of India, 1987.
MLA aipamenaLuck, David. Marketing Research. 7th. Prentice Hall of India, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.