Tài liệu tham khảo WikiPedia: Isocrates http://people.morehead-st.edu/fs/w.willis/isocrate... http://old.perseus.tufts.edu/cgi-bin/ptext?lookup=... http://www.perseus.tufts.edu/hopper/searchresults?... http://www.keithmurphy.info/399/Isoc.htm http://www.otago.ac.nz/classics/scholiagfx/v07p041... http://www.archive.org/details/AHistoryOfGreeceToT... http://www.attalus.org/old/orators1.html#Isocrates
