Vogelaar, D. M. (1992). Know your customer: Using practical market research for profit. Prentice-Hall.
Chicago Style (17. basım) AtıfVogelaar, Donald M. Know Your Customer: Using Practical Market Research for Profit. New York: Prentice-Hall, 1992.
MLA (9th ed.) AtıfVogelaar, Donald M. Know Your Customer: Using Practical Market Research for Profit. Prentice-Hall, 1992.
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