Joachim of Fiore
| Author(s) | Title | Reference | |
|---|---|---|---|
| F.M. Powicke | Mediaeval and Renaissance Studies. vol. II, by Richard Hunt, Raymond Klibansky | 21/, p. 40 | |
| John C. Barnes | The World of Dante: Essays on Dante and his Times, by Cecil Grayson | 51/2, p. 266 |