History of the Peloponnesian War

Thucydides

Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.

but the rest of the Amphilochians are still barbarians. Now in course of time the Ambraciots expelled the Argives and themselves seized the city.

But the Amphilochians, when this happened, placed themselves under the protection of the Acarnanians, and together they called in the Athenians, who sent to them Phormio as general with thirty ships. On the arrival of Phormio they took Argos by storm and reduced the Ambraciots to slavery, and Amphilochians and Acarnanians settled there together.