Bibliography : Hydrus
Janetta Rebold Benton | Medieval Menagerie: Animals in the Art of the Middle Ages |
John Cherry, ed. | Mythical Beasts |
Anne Clark | Beasts and Bawdy |
Arthur H. Collins | Symbolism of Animals and Birds Represented in English Church Architecture |
Michael J. Curley | Physiologus |
Willy Ley | Dawn of Zoology |
Ann Payne | Medieval Beasts |