Dyfyniad APA

Schiffman, S. (2008). The 25 sales skills they don`t teach at business school. massachusetts Adams Media Corp.

Dyfyniad Arddull Chicago

Schiffman, Stephan. The 25 Sales Skills They Don`t Teach at Business School. [s.l]: massachusetts Adams Media Corp, 2008.

Dyfyniad MLA

Schiffman, Stephan. The 25 Sales Skills They Don`t Teach at Business School. massachusetts Adams Media Corp, 2008.

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