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.
On the return of the Peloponnesians from Attica the Spartans themselves and the nearest of the Perioeci at once set out for Pylos, the other Lacedaemonians following more slowly as they had just come in from another campaign.