1. Brennan , T. C. 2000 The praetorship in the Roman Republic
2. Imperium Maius in the Roman Republic;Ehrenberg;American Journal of Philology,1953
3. Giovannini , A. 1983 Imperium Consulare
4. Imperium Maius: a note;Last;Journal of Roman Studies,1947
5. Lintott , A. 1999 The constitution of the Roman Republic