M. Tulli Ciceronis, In C. Verrem actionis secundae liber quartus (De signis) commento storico e archeologico - Lazzeretti, Alessandra (Ed. ETS, 2006)
Marcus Tullius Cicero (106 - 43 B.C.); Gaius Verres (1st cent. B.C.). - Contains bibliography, bibliographical references, notes and indices