English: A Greek phalanx charging into battle, as peltasts throw spears over the heads of the hoplites.: this graphic was first published in May, Elmer; Stadler, Gerald; Votaw, John; Griess, Thomas (series ed) (1984) "Classical Warfare: The Age of the Greek Hoplite" in Ancient and Medieval Warfare: The History of the Strategies, Tactics, and Leadership of Classical Warfare, New Jersey, United States: Avery Publishing Group, pp. p. 4 ISBN: 0-89529-262-9.