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.
Upon the retreat of the Lacedaemonians the Argives marched out on the last day but three of the month before Carneus, and keeping this as the day during the whole time that they were out, invaded and plundered Epidaurus.