History of the Peloponnesian War . Trans. Richard Crawley . Wikisource .   , V, VIII. See original text in Perseus program . Xenophon , Memorabilia . See original text in Perseus program . Secondary sources Browne, Sir Thomas (1646-1672). Pseudodoxia Epidemica . http://penelope.uchicago.edu/pseudodoxia/pseudo412.html#b26 .   Guthrie, W.K.C. (1986). A History