A discussion on Ptolemy's authority
| Steel, Carlos. |
| A discussion on Ptolemy's authority : Henry Bate's prologue to his translation of Ibn Ezra's Book of the world / Carlos Steel |
| In: Ptolemy's science of the stars in the Middle Ages. p. 245-281 |
| Baten, Henri, 1246-ca. 1310 |
| Speculum divinorum et quorundam naturalium / Henricus Bate |
| Leuven : Leuven university press, 1990- |