Bibliography : Pearl-oyster
| Claudius Aelianus; A. F. Scholfield, trans. | On the Nature of Animals |
| Michael J. Curley | Physiologus |
| Florence McCulloch | Mermecolion - A Medieval Latin Word for 'Pearl Oyster' |
| Martha Hale Shackford | Legends and Satires from Medieval Literature |
| R. Allen Shoaf | The Pearl |
| Leo Wiener | Contribution Towards a History of Arabico-Gothic Culture, Volume IV: Physiologus Studies |
