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.
The next day the Argives, on learning this, razed Orneae to the ground and withdrew, and later the Athenians also went home with their ships. The Athenians also conveyed by sea some of their own cavalry and the Macedonian exiles that were with them to Methone, which borders on Macedonia, and ravaged the country of Perdiccas.
And the Lacedaemonians sent to the Chalcidians in Thrace, who were observing a truce renewable every ten days with the Athenians, and urged them to join Perdiccas in the war; but they were unwilling. So the winter ended, and with it the sixteenth year of this war of which Thucydides wrote the history.