|   | by Richard KochHardcover details (UK). details (USA). details (Germany). details (Canada). ISBN: 978-1-85788-167-7 ISBN-10: 1-85788-167-2 Nicholas Brealey Publishing · 1997 | 
| See also: | ||
| 2007 | Paperback | The 80/20 Principle: The Secret of Achieving More with Less | 
| 1998 | Paperback | The 80/20 Principle: The Secret of Achieving More with Less |