| title | ISBN-13 | year of publication |
|---|---|---|
| Bolycs Cymraeg | 978-1-78562-066-9 | 2016 |
| Cerddi'r Cewri | 978-1-85902-985-5 | 2009 |
| Grav in his Own Words | 978-1-84323-944-4 | 2009 |
| Mabinogion, Y: Diweddariad | 978-1-85902-260-3 | 2001 |
| R. S. Thomas – Letters to Raymond Garlick, 1951-1999 | 978-1-84323-826-3 | 2009 |