Gschwandtner, G. (2007). The psychology of sales success: Learn to think like your customer to close every sale. McGraw-Hill.
Παραπομπή Chicago StyleGschwandtner, Gerhard. The Psychology of Sales Success: Learn to Think Like Your Customer to Close Every Sale. McGraw-Hill, 2007.
Παραπομπή MLAGschwandtner, Gerhard. The Psychology of Sales Success: Learn to Think Like Your Customer to Close Every Sale. McGraw-Hill, 2007.
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