Dyfyniad APA

Schiffman, S. (2008). The 25 sales habits of highly successful salespeople (3rd ed.). Adams Media.

Dyfyniad Arddull Chicago

Schiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Avon, Mass.: Adams Media, 2008.

Dyfyniad MLA

Schiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Adams Media, 2008.

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