Ostrowski, Janusz A.: Personifications of rivers in Greek and Roman art (Warszawa [u.a.], 1991)

2—5. River Gelas on the 5th century’s coins of Gela (No. 2 — National Museum in Cracow,
inv. No. VII-A-3963; Nos. 3—5 after Jenkins, Figs. 37, 145)