The Psychology of Selling : Increase Your Sales Faster and Easier Than You Ever Thought Possible Brian Tracy

Brian Tracy, one of the top professional speakers and sales trainers in the world today, found that his most important breakthrough in selling was the discovery that it is the "Psychology of Selling" that is more important than Это и многое другое вы найдете в книге The Psychology of Selling : Increase Your Sales Faster and Easier Than You Ever Thought Possible (Brian Tracy)