Richard Koch
The 80/20 Principle and 92 Other Powerful Laws of Nature
The Science of Success
Nicholas Brealey Publishing, 2014
Living the 80/20 Way
Work Less, Worry Less, Succeed More, Enjoy More
Nicholas Brealey Publishing, 2005
The 80/20 Individual
The Nine Essentials for 80/20 Success at Work
Nicholas Brealey Publishing, 2003
