Schiffman, S. (2008). The 25 sales habits of highly successful salespeople (3rd ed.). Adams Media.
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Chicago-čujuhus (17. p.)
Schiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Avon, Mass.: Adams Media, 2008.
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MLA-čujuhus (9. p.)
Schiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Adams Media, 2008.
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