Montefeltro
| Author(s) | Title | Reference | |
|---|---|---|---|
| N. Denholm-Young | Medievalia et Humanistica, fasciculus secundus | 15/, p. 75 | |
| Alexander Murray | The Birth of Purgatory, by Jacques Le Goff, Arthur Goldhammer | 56/1, p. 115 |
| Author(s) | Title | Reference | |
|---|---|---|---|
| N. Denholm-Young | Medievalia et Humanistica, fasciculus secundus | 15/, p. 75 | |
| Alexander Murray | The Birth of Purgatory, by Jacques Le Goff, Arthur Goldhammer | 56/1, p. 115 |