Botsford, _Assemblies_, as above; Drumann-Groebe, as above; Ferrero,
_Greatness and Decline_, vol. 1, chs. xvii–xviii, vol. ii; Frank, _Roman
Imperialism_, ch. xvii; Fowler, W., _Julius Caesar_; Heitland, _Roman
Republic_, vol. iii, chs. liii–lviii; Meyer, Ed., _Caesar’s Monarchie und
das Principat des Pompeius_; Mommsen, _History_, bk. v, chs. vii–xi;
Niese, _Geschichte_, pp. 227–257; Oman, _Seven Roman Statesmen_, chs. vii,
ix, Cato and Caesar; Strachan-Davidson, _Cicero_.