Vocabulary and Index. Scott, Foresman and Company. 1891. Mommsen, Theodor. Roman Constitutional Law. 1871-1888 Tighe, Ambrose. The Development of the Roman Constitution. D. Apple & Co. 1886. Von Fritz, Kurt. The Theory of the Mixed Constitution in Antiquity. Columbia University Press, New York. 1975. The Histories by Polybius Cambridge Ancient History, Volumes 9–13. A. Cameron, The Later Roman Empire, (Fontana Press, 1993). M. Crawford, The Roman Republic, (Fontana Press, 1978). E. S. Gruen, "The Last Generation of the Roman Republic" (U California Press, 1974) F. Millar, The Emperor in the Roman World, (Duckworth, 1977, 1992). A. Lintott, "The Constitution of the Roman Republic" (Oxford University Press, 1999) Primary sources Cicero's De Re Publica, Book Two Rome at the End of the Punic Wars: An Analysis of the Roman Government; by Polybius Secondary source material Considerations on the Causes of the Greatness of the Romans and their Decline, by Montesquieu The Roman Constitution to the Time of Cicero What a Terrorist Incident in Ancient Rome Can Teach Us Smith's Dictionary of Greek and Roman Antiquities, article Concilium External links Roman Kingdom Popular assemblies