1. Who Killed Change?: Solving the Mystery of Leading People Through Change by Ken Blanchard, John Britt, Judd Hoekstra and Pat Zigarmi
2. Coaching People: Expert Solutions to Everyday Challenges by Harvard Business School Press
3. Drive: The Surprising Truth About What Motivates Us by Daniel H. Pink
4. SuperFreakonomics: Global Cooling, Patriotic Prostitutes, and Why Suicide Bombers Should Buy Life Insurance by Steven D. Levitt and Stephen J. Dubner
