| N. Denholm-Young |
The Shorter Cambridge Medieval History, by C. W. Previté-Orton |
|
22/1, p. 58 |
| N. Denholm-Young |
Legislation of Edward I, by T. F. T. Plucknett |
|
20/, p. 98 |
| N. Denholm-Young |
'The personal role of Simon de Montfort in the period of baronial reform and rebellion 1258-65', Proceedings of the British Academy XL (1954), by R. F. Treharne |
|
25/2, p. 104 |