Mark S A Smith Author

Jay Conrad Levison is the author of the best-selling Guerrilla Marketing Series.

Mark S. A. Smith, an internationally acclaimed speaker and writer on trade show selling, has over 200 articles published and was past president of the Colorado Speakers Association.

Orvel Ray Wilson is an internationally acclaimed author and speakeron sales, marketing, and management. Coauthor of Guerrilla Selling: Unconventional Weapons and Tactics for Increasing Your Sales, he is President of The Guerrilla Group, Inc., an international trainingand consulting firm serving clients worldwide.