"The Leadership Challenge" by James Kouzes and Barry Posner is a classic book on leadership that provides a comprehensive overview of the essential principles of effective leadership. The authors draw on extensive research and real-world examples to illustrate their points and offer practical tips and strategies for putting the principles of the book into practice.
The One Minute Manager" by Ken Blanchard and Spencer Johnson is a concise, practical guide to effective management. The book is written in a story format that follows a young man's journey to find a "One Minute Manager" who can teach him how to become an effective manager himself.