Cita APA (7a ed.)

Mackendrick, P., & Singh, K. L. (1989). The philosophical books of Cicero ([1st pub.].). Duckworth.

Cita Chicago Style (17a ed.)

Mackendrick, Paul, y Karen Lee Singh. The Philosophical Books of Cicero. [1st pub.]. London: Duckworth, 1989.

Cita MLA (9a ed.)

Mackendrick, Paul, y Karen Lee Singh. The Philosophical Books of Cicero. [1st pub.]. Duckworth, 1989.