Richard Koch

El principio 80/20

The 80/20 Principle, Third Edition

The 80/20 Manager

Simplify

80/20 Daily

80/20 Sales and Marketing

80/20 Beliefs

The Star Principle

80/20 Daily

80/20 Daily

Das 80/20-Prinzip : Mehr Erfolg mit weniger Aufwand

The Financial Times Guide to Strategy : How to create, pursue and deliver a winning strategy, 5th Edition (FT Guides)