Drogula 2015, pp. 26–27. Eg "Livy found three [commanders] in 464... and to resolve this inconsistency... [he called one] a proconsul in spite of the fact he later stated clearly that the Romans did not use promagistrates until 327 BC... Dionysius... does the same thing, identifying extra [commanders] as proconsuls long before [prorogation's introduction]". Drogula, Fred K (2015). Commanders & command in the Roman republic and early empire. Chapel Hill: University of North Carolina Press. ISBN978-1-4696-2314-6. OCLC905949529.
Drogula 2015, pp. 26–27. Eg "Livy found three [commanders] in 464... and to resolve this inconsistency... [he called one] a proconsul in spite of the fact he later stated clearly that the Romans did not use promagistrates until 327 BC... Dionysius... does the same thing, identifying extra [commanders] as proconsuls long before [prorogation's introduction]". Drogula, Fred K (2015). Commanders & command in the Roman republic and early empire. Chapel Hill: University of North Carolina Press. ISBN978-1-4696-2314-6. OCLC905949529.