Richard Koch Book

Crown Currency

The 80/20 Principle, Third Edition: The Secret to Achieving More with Less (English Edition)

Il mistero delle pagine perdute national treasure

Piatkus

Unreasonable Success and How to Achieve It: Unlocking the Nine Secrets of People Who Changed the World

Hodder & Stoughton

The 80/20 Principle: The Secret of Achieving More with Less

T.H.E. Company

The 80/20 Principle By Richard Koch: Focus On the Most Impactful Tasks

McFarland

Robert Koch and American Bacteriology            

Nicholas Brealey Publishing

80/20 Your Life: Work Less, Worry Less, Succeed More, Enjoy More

FrancoAngeli

Il principio 80/20. Il segreto per ottenere di più con meno

John Murray Business

80/20 Daily: Your Day-by-Day Guide to Happier, Healthier, Wealthier, and More Successful Living using the 8020 Principle (English Edition)

Piatkus

The Star Principle: How it can make you rich (English Edition)