| C.A. Robson |
Saint Modwenna, by A. T. Baker, Alexander Bell |
|
18/, p. 49 |
| Henrietta Leyser |
The Letters of Peter the Venerable. Harvard Historical Studies LXXVIII, Vol. I. Vol. II, by Giles Constable |
|
38/2, p. 181 |
| Éamonn Ó Carragáin |
The Ruthwell Cross: Papers from the Colloquium sponsored by the Index of Christian Art, Princeton University, 8 December 1989, Index of Christian Art, Occasional Papers I, by Brendan Cassidy |
|
63/2, p. 317 |