| Walter Ullmann |
On the Medieval Origins of the Modern State, by Joseph R. Strayer |
|
41/1, p. 79 |
| J.K.B.M. Nicholas |
Ius Romanum Medii Aevi, auspice Collegio Antiqui Iuris Studiis Provehendis, Pars I, 1 a-d, Pars V, 2 d, Pars V, 7-9 |
|
32/2, p. 130 |
| John Barton |
Bartolo da Sassoferrato: Studi e Documenti per il vi Centenario, by I. Giuffré |
|
35/2, p. 173 |