Richardson 1992, pp. 564–565, citing, among others, Plaut. Capt., 156, 158, 474; Ter. Haut., 516; Cic. Cael., 26.63. Richardson, John (1992). "The administration of the empire". In Crook, John; et al. (eds.). The last age of the Roman Republic, 146–43 BC. Cambridge Ancient History. Vol. 9 (2nd ed.). Cambridge University Press. pp. 564–98. ISBN0-521-85073-8. OCLC121060.
Richardson 1992, pp. 564–565, citing, among others, Plaut. Capt., 156, 158, 474; Ter. Haut., 516; Cic. Cael., 26.63. Richardson, John (1992). "The administration of the empire". In Crook, John; et al. (eds.). The last age of the Roman Republic, 146–43 BC. Cambridge Ancient History. Vol. 9 (2nd ed.). Cambridge University Press. pp. 564–98. ISBN0-521-85073-8. OCLC121060.