There are many, many books on leadership out there, but a few seem to remain "classic" to us. They are relevant, practical in many situations and pretty easy to understand.
Do you have some to add? Please comment at the bottom.
The 7 Habits of Highly Effective People; by Stephen R. Covey
How to Win Friends & Influence People; by Dale Carnegie
The One Minute Manager; by Ken Blanchard and Spencer Johnson
Execution: The Discipline of Getting Things Done; by Larry Bossidy, Ram Charan, and Charles Burck
The Five Dysfunctions of a Team: A Leadership Fable; by Patrick M. Lencioni
What Got You Here Won’t Get You There: How Successful People Become Even More Successful; by Marshall Goldsmith and Mark Reiter
First, Break All the Rules: What the World’s Greatest Managers Do Differently; by Marcus Buckingham and Curt Coffman
Good to Great: Why Some Companies Make the Leap … and Others Don’t; by Jim Collins
The Art of War; by Sun Tzu
Who Moved My Cheese? An Amazing Way to Deal with Change in Your Work and in Your Life; by Spencer Johnson with Kenneth Blanchard
On Becoming a Leader, by Warren Bennis. "His message is, you can't be a leader until you know who you are. It's that simple," said Sattersten. "Once you know, you have amazing ability to lead successfully."
The Leadership Moment, by Michael Useem. A book you read for the stories...
The Leadership Challenge, by Jim Kouzes and Barry Posner. "a compelling model for thinking about leadership"
Control Your Destiny or Someone Else Will, by Noel Tichy and Stratford Sherman. The book, about Jack Welch's leadership at GE, has been compared to watching Tiger Woods change his golf swing at the top of his game.
.Leadership is an Art, by Max De Pree
The Radical Leap, by Steve Farber
Leading Change, by John Kotter
Questions of Character, by Joe Badaracco
Never Give In! Speeches by Winston Churchill.
The Practice of Management – Peter Drucker
In Search of Excellence – Tom Peters & Robert Waterman
What Got You Here, Won’t Get You There – Marshall Goldsmith
The Successful Manager’s Handbook – PDI
Emotional Intelligence – Daniel Goleman
The 21 Irrefutable Laws of Leadership – John Maxwell
Authentic Leadership – Bill George
