Brilliant Influence

What the Most Influential People Know, Do and Say

2010

Powerhouse

How to Master the Skills of Efficiency and Effectiveness

2014

Zarzadzanie stresem

czyli jak sobie radzić w trudnych sytuacjach

2012

The Yes/No Book

How to Do Less and Achieve More

2012

12 Shots

2020

Brilliant Time Management

What the most productive people know do and say

2010