- R. B. Cialdini, ”Influence: The Psychology of Persuasion”
- A. A. Watts, ”The Way of Zen”
- D. Coyle, ”The Little Book of Talent”
- H. Beckwith & C. K. Clifford, ”You, Inc.: The Art of Selling Yourself”
- J. Loehr & T. Schwartz, ”The Power of Full Engagement”