Cambridge University Press · University of Wales Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The March of Wales 1067-1300: A Borderland of Medieval Britain | 978-0-7083-2115-7 (0-7083-2115-1) | 2008 |
| The Medieval March of Wales: The Creation and Perception of a Frontier, 1066–1283 | 978-0-521-76978-5 (0-521-76978-7) | 2010 |