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.
Meanwhile Hippocrates made a levy in mass of the citizens, resident aliens, and foreigners in Athens, and arrived at his destination after the Boeotians had already come back from Siphae, and encamping his army began to fortify Delium, the sanctuary of Apollo, in the following manner.