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 Corinthians also went to war with the Athenians on account of some private differences; but the rest of the Peloponnesians kept quiet.
The Melians, too, took the part of the Athenian wall over against the market-place by a night assault; then having slain some of the men and brought in grain and as many other necessaries as they could, they withdrew and kept quiet. After that the Athenians maintained a better watch. So the summer ended.