Covert Persuasion. Psychological Tactics and Tricks to Win the Game, Kevin Hogan 
The Secret Language of Business. How to Read Anyone in 3 Seconds or Less, Kevin Hogan 
The Science of Influence. How to Get Anyone to Say "Yes" in 8 Minutes or Less!, Kevin Hogan 
Invisible Influence. The Power to Persuade Anyone, Anytime, Anywhere, Kevin Hogan