What I've read ...

Bazerman, M., Judgment in Management Decision Making - 4th Edition

Berg, B., Qualitative Research Methods - 3rd Edition

Burns, J. MacGregor, Leadership

Ciulla, J., Ethics, the Heart of Leadership

Cooke, R., 36 Hour Course in Finance for Non-Financial Managers

Covey, S., First Things First
Covey, S., Principle-Centered Leadership
Covey, S., The 7 Habits of Highly Effective People
Covey, S., The 8th Habit: From Effectiveness to Greatness

Daniels, T., Spiker, B., and Pappa, M., Perspectives on Organizational Communication - 4th Edition

DeKluyver, C., Strategy: A View from the Top

DePree, M., Leadership is an Art

Fox, J., How to Become CEO: The Rules for Rising to the Top of Any Organization

Harrison, E., The Managerial Decision Making Process - 5th Ed.

Hill, A., Just Business: Christian Ethics for the Workplace

Johnson, C., Meeting the Ethical Challenges of Leadership

Keirsey, D. and Bates, M., Please Understand Me

Kelley, R., How to Be a Star at Work

Maxwell, J., The Difference Maker: Making Your Attitude Your Greatest Asset
Maxwell, J., The 17 Essential Qualities Of A Team Player Becoming The Kind Of Person Every Team Wants
Maxwell, J., 25 Ways to Win with People: How to Make Others Feel Like a Million Bucks

McCall, M. and Kaplan, R., Whatever It Takes: The Realities of Managerial Decision Making

Oakley, E. and Krug, D., Enlightened Leadership

Osland, J., Kolb, D. and Rubin, I., Organizational Behavior Reader - 7th Edition
Osland, J., Kolb, D. and Rubin, I., Organizational Behavior: An Experiential Approach

Pinder, C., Work Motivation in Organizational Behavior

Rost, J., Leadership for the 21st Century

Saint, S. and Lawson, J., Rules for Reaching Consensus: A Modern Approach to Decision Making

Sanders, T., Love is the Killer App

Schien, E., Organizational Culture and Leadership - 2nd Edition

Schon, D., The Reflective Practitioner

Spears, L., Insights on Leadership

Spradley, J. and McCurdy, D., The Cultural Experience/Ethnography in Complex Society

Sussman L., Deep S. and Stiber A., Lost & Found

Thomas, K., Instrinsic Motivation at Work

Tracey, B., Eat That Frog!

Wilkens, S., Beyond Bumper Sticker Ethics

Witherspoon, P., Communicating Leadership

Yukl, G., Leadership in Organizations - 5th Edition