ZIKMUND WILLIAM G. (1989). EXPLORING MARKETING RESEARCH (3RD.). DRYDEN PRESS.
Chicago-čujuhus (17. p.)ZIKMUND WILLIAM G. EXPLORING MARKETING RESEARCH. 3RD. CHICAGO: DRYDEN PRESS, 1989.
MLA-čujuhus (9. p.)ZIKMUND WILLIAM G. EXPLORING MARKETING RESEARCH. 3RD. DRYDEN PRESS, 1989.
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