Antzeko izenburuak: Primal Leadership :
- The Power of Positive Leadership /
- How to sell to an idiot : 12 steps to selling anything to anyone /
- Motivational marketing : how to effectively motivate your prospects to buy now, buy more, and tell their friends too! /
- The Oxford Handbook of Military Psychology /
- Managerial leadership /
- Business leadership : a Jossey-Bass reader /