| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Catholics: Britain's Largest Minority | Paperback | 978-0-14-027923-8 (0-14-027923-7) | 2002 |
| The Political Gene: How Darwin's Ideas Changed Politics | " | 978-0-330-42745-6 (0-330-42745-8) | 2010 |
| The Political Gene: How Darwin's Ideas Changed Politics | Hardcover | 978-0-330-42744-9 (0-330-42744-X) | 2009 |