History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
About the same period of this summer the Athenians also despatched thirty ships to the Peloponnese, with Asopius son of Phormio as commander; the Acarnanians having requested them to send them either a son or other relative of his to take the command.
The ships, as they coasted along, ravaged the maritime towns of Laconia.