| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Electing Cromwell | 978-1-138-66122-6 (1-138-66122-8) | 2016 |
| Electing Cromwell: The Making of a Politician | 978-1-84893-018-6 (1-84893-018-6) | 2011 |
| Letters to a Young Huntsman | 978-1-4327-8345-7 (1-4327-8345-9) | 2011 |