Keep Your Brain Sharp: Teach Yourself

Brilliant Brain Training: Flash

Brain Boot Camp: The ultimate mental workout: Mensa-level logic, verbal and numerical tests

Build Your Brain Power: The Art of Smart Thinking

Advanced Brain Training: Lateral thinking tests and Mensa-level puzzles to hone your mental agility

Strategic Thinking: A Step-by-step Approach to Strategy and Leadership, Edition 3

Managing Public Services - Implementing Changes: A thoughtful approach to the practice of management, Edition 2