Branham, Leigh. The 7 Hidden Reasons Employees Leave. How to recognize the subtle signs and act before it's too late. AMACOM, 2005.

Buckingham, Marcus and Clifton, Donald. Now, Discover Your Strengths. The Free Press, 2001.

Gostick, Adrian & Elton, Chester. The 24-Carrot Manager. A remarkable story of how a leader can unleash human potential. Gibbs Smith, 2002.

Gostick, Adrian & Elton, Chester. The Invisible Employee. Realizing the Hidden Potential in Everyone. John Wiley and Sons, Inc., 2006.

Miller, John G. Flipping the Switch. Five keys to success at work and in life; unleash the power of personal accountability using QBQ!G. P. Putnam's Sons, 2006.

Miller, John G. QBQ! The Question Behind the Question. What to really ask yourself; practicing personal accountability in business and in life. Denver Press, 2001.

O'Reilly III, Charles and Pfeffer, Jeffrey. Hidden Value. How great companies achieve extraordinary results with ordinary people. Harvard Business School Press, 2000.

Pascale, Richard, Millemann, Mark, & Gioja, Linda. Surfing the Edge of Chaos. The laws of nature and the new laws of business. Crown Business, 2000.

Rath, Tom and Clifton, Donald. How Full is Your Bucket? Positive strategies for work and life. Gallup Press, 2004.

Sirota, David, Mischkind, Louis & Meltzer, Michael Irwin. The Enthusiastic Employee. How companies profit by giving workers what they want. Wharton School Publishing, 2005.

Teerlink, Rich and Ozley, Lee. More Than a Motorcycle. The leadership journey at Harley-Davidson. Harvard Business School Press, 2000.

Ulrich, Dave and Brockbank, Wayne. The HR Value Proposition. Harvard Business School Press, 2005.

Ulrich, Dave and Smallwood, Norm. Why the Bottom Line Isn't! John Wiley and Sons, Inc., 2005.