| N. Denholm-Young |
The Shorter Cambridge Medieval History, by C. W. Previté-Orton |
|
22/1, p. 58 |
| B.F. ROBERTS |
Historia Gruffud vab Kenan, by D. Simon Evans |
|
49/1, p. 124 |
| D. Simon Evans |
Rhigyfarch's Life of St. David. The Basic Mid Twelfth-Century Latin Text with Introduction, Critical Apparatus and Translation, by J. W. James |
|
37/2, p. 183 |