Unanimously considered to be the world authority on sales, he is the author of international bestseller The Little Red Book of Selling
Performance Strategies is the registered
trade mark of the ROI GROUP SRL
Total invested capital 100.000 € i.v.
VAT No. and Tax Code 01999300443
Via G. Carducci, 67 | 62100 Macerata (MC)
Via T. Tasso, 11 | 20123 Milano (MI)