AAKER DAVID A. (2001). MARKETING RESEARCH (7.). JOHN WILEY AND SONS.
Chicago-čujuhus (17. p.)AAKER DAVID A. MARKETING RESEARCH. 7. NEW YORK: JOHN WILEY AND SONS, 2001.
MLA-čujuhus (9. p.)AAKER DAVID A. MARKETING RESEARCH. 7. JOHN WILEY AND SONS, 2001.
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