Jabarkan Catatan dari Konstitusi Romawi

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Johnston, Harold Whetstone. Orations and Letters of Cicero: With Historical Introduction, An Outline of the Roman Constitution, Notes, 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.