| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Collaboration Economy: How to Meet Business, Social, and Environmental Needs and Gain Competitive Advantage | 978-1-118-53834-0 (1-118-53834-X) | 2013 |
| The Future of Value: How Sustainability Creates Value Through Competitive Differentiation | 978-1-118-07452-7 (1-118-07452-1) | 2011 |