Ancient
Botsford, G. W. A History of Greece. New York, 1912.
Coulanges, Fustel de. The Ancient City. English translation from French by W. Small. 10th Edition. Boston, 1901.
Hershey, A. S. The History of International Relations During Antiquity and the Middle Ages. American Journal of International Law, 1911, v, 901.
Heitland, W. E. The Roman Republic. 3 Vols. Cambridge, England, 1909.
Leech, H. B. Ancient International Law. Contemporary Review, 1883-1894, xliii, 260; xliv, 890.
Phillipson, Coleman. The International Law and Custom of Ancient Greece and Rome. 2 Vols. London, 1911.