| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1991 | 978-1-85651-000-4 | H. G. A Hughes | The linguistic situation in Samoa in 1952 |
| 2006 | 978-1-85651-059-2 | Goronwy Alun Hughes | Dyledswydd Rhieni Anghydffurfiol |
| '' | 978-1-85651-060-8 | Benjamin Evans | Yr Eglwys Gristionogol |