Subliminal Persuasion. Influence & Marketing Secrets They Don′t Want You To Know, Dave Lakhani 
Persuasion. The Art of Getting What You Want, Dave Lakhani 
How To Sell When Nobody′s Buying. (And How to Sell Even More When They Are), Dave Lakhani 
Power of An Hour. Business and Life Mastery in One Hour A Week, Dave Lakhani