Sources : - Homeric hymn to Demeter
- Orphic hymn
- Metamorphose, Ovide
- Geography, Strabon
- Halieutica, Oppian
- “Myths, Coins, and Semiotics: Arethusa and Persephone on the Coins of Syracuse.”, Rosa Maria Motta
- "Dictionnaire des Antiquités Grecques et Romaines", Daremberg & Saglio
- Shared gnosis