McCargar, David J.: Isagoras, son of Teisandros, and Isagoras, Eponymous Archon of 508/7: A Case of Mistaken Identity. Phoenix, Autumn, 1974, 28. vsk, nro 3, s. 275–281. Artikkelin verkkoversio. (englanniksi)
tufts.edu
perseus.tufts.edu
Smith, William: ”Isagoras”, Dictionary of Greek and Roman Biography and Mythology. Boston: Little, Brown and Company, 1849–1867. Teoksen verkkoversio. (englanniksi)
