| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Double Vision: Moral Philosophy and Shakespearean Drama | Paperback | 978-0-691-15545-6 | 2012 |
| Double Vision: Moral Philosophy and Shakespearean Drama | Hardcover | 978-0-691-12563-3 | 2006 |
| Ethics and the Beast: A Speciesist Argument for Animal Liberation | Paperback | 978-0-691-16465-6 | 2014 |
| Ethics and the Beast: A Speciesist Argument for Animal Liberation | Hardcover | 978-0-691-13328-7 | 2007 |