Cambridge University Press · Oxford University Press
| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Simon de Montfort | Paperback | 978-0-521-37636-5 | 1996 |
| Simon de Montfort | Hardcover | 978-0-521-37493-4 | 1994 |
| The Origins of the English Parliament, 924-1327 | Paperback | 978-0-19-964534-3 | 2012 |
| The Origins of the English Parliament, 924-1327 | Hardcover | 978-0-19-958550-2 | 2010 |
| Thomas of Lancaster, 1307-1322: A Study in the Reign of Edward II | " | 978-0-19-821837-1 | 1970 |