Getting Things Done: The Art of Stress-Free Productivity

HBR's 10 Must Reads on Leadership (with featured article "What Makes an Effective Executive," by Peter F. Drucker)

Growth Hacker Marketing: A Primer on the Future of PR, Marketing and Advertising

Sales Success: The Brian Tracy Success Library

The Harvard Business Review Entrepreneur's Handbook: Everything You Need to Launch and Grow Your New Business

The Practical Drucker: Applying the Wisdom of the World's Greatest Management Thinker