Stephan Schiffman
1
Audiobooks Reviewed
3.3
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Stephan Schiffman is a renowned sales trainer and author who has trained over 500,000 salespeople at major corporations such as AT&T, Motorola, and IBM. He is president of D.E.I Management Group and has authored numerous bestselling books and audiobooks focused on effective selling techniques, especially cold calling.
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Business & Economics (1 book) and Self-Help (1 book)
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Stephan Schiffman (1 book)
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