History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
Here they persuaded their allies the Metapontines, to send with them three hundred darters and two galleys, and with this reinforcement coasted on to Thurii, where they found the party hostile to Athens recently expelled by a revolution,
and accordingly remained there to muster and review the whole army, to see if any had been left behind, and to prevail upon the Thurians resolutely to join them in their expedition, and in the circumstances in which they found themselves to conclude a defensive and offensive alliance with the Athenians.