Luck, D. (1987). Marketing Research (7th.). Prentice Hall of India.
Chicago-čujuhus (17. p.)Luck, David. Marketing Research. 7th. New Delhi: Prentice Hall of India, 1987.
MLA-čujuhus (9. p.)Luck, David. Marketing Research. 7th. Prentice Hall of India, 1987.
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