| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Green in Gridlock: Common Goals, Common Ground, and Compromise | Paperback | 978-1-62349-300-4 (1-62349-300-5) | 2015 |
| Green in Gridlock: Common Goals, Common Ground, and Compromise | Hardcover | 978-1-62349-014-0 (1-62349-014-6) | 2013 |
P. H. · P. Hansen · P W. · P. Walden · Paul Hansen · Paul W. · Paul Walden · W H · W. Hansen