Marks, R. B. (1985). Personal Selling: An Interactive Approach. Allyn and Bacon.
Čikaški stil citiranjaMarks, Ronald B. Personal Selling: An Interactive Approach. Boston: Allyn and Bacon, 1985.
MLA način citiranjaMarks, Ronald B. Personal Selling: An Interactive Approach. Allyn and Bacon, 1985.
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