Sources
(1) Dictionary of Greek and Roman Biography and Mythology, William Smith, Editor.
(2) Ciceron, Epistulae ad Familiares viii. 8 §§ 5, 6, Epistulae ad Atticum viii. 11, B.
(3) Gaius Julius Caesar (attributed), De Bello Africo 89.
(4) Joseph Hilarius Eckhel, Doctrina Numorum Veterum v. pp. 206, 207.