| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Dominion of Love: Animal Rights According to the Bible | 978-1-59056-009-9 (1-59056-009-4) | 2002 |
| The Great Compassion: Buddhism and Animal Rights | 978-1-59056-069-3 (1-59056-069-8) | 2004 |
| The Longest Struggle: Animal Advocacy from Pythagoras to PETA | 978-1-59056-106-5 (1-59056-106-6) | 2007 |