| references | secondary books |
|---|---|
| Galen, "Against The Opinons of Julian Concerning Hippocrates Aphorisms", 5.18a_266k | |
| Galen, "Against The Opinons of Julian Concerning Hippocrates Aphorisms", 18a.280 | Hankinson, Cause and Explanation in Ancient Greek Thought (1998), 377 |