Richard the Englishman, medical writer (c. 1162–1242): Regulae de urinis [Latin]
- Manuscripts:
-
- Exeter College MS. 35 (Digital facsimile online) — Composite manuscript
- MS. Bodl. 567 — Composite manuscript
- Merton College MS. 324 — S. XV; Script of Low Countries appearance.
The above references reflect only the current coverage of the online catalogue and may not be comprehensive.