| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Earthbound: New Introductory Essays in Environmental Ethics | 978-0-07-554425-8 (0-07-554425-3) | 1984 | |
| World Hunger and Morality | 978-0-13-448284-2 (0-13-448284-0) | 1995 | Hugh La Follette |
| World Hunger and Moral Obligation | 978-0-13-967950-6 (0-13-967950-2) | 1977 | " |