Carl McDaniel, Jr., & Gates Roger. (2004). Marketing Research Essentials (4th.). John Wiley&Sons,Inc.
Chicago-čujuhus (17. p.)Carl McDaniel, Jr., juo Gates Roger. Marketing Research Essentials. 4th. USA: John Wiley&Sons,Inc, 2004.
MLA-čujuhus (9. p.)Carl McDaniel, et al. Marketing Research Essentials. 4th. John Wiley&Sons,Inc, 2004.
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