«Unlimited Sales Success: 12 Simple Steps for Selling More than You Ever Thought Possible» by Brian Tracy,Michael Tracy English | ISBN: 9781469089010 | MP3@48 kbps | 7h 06m | 146.4 MB
«The Psychology of Selling: Increase Your Sales Faster and Easier Than You Ever Thought Possible» by Brian Tracy English | ISBN: 9781469089034 | MP3@48 kbps | 6h 18m | 130.0 MB