Cita APA (7th ed.)

Cicero & Grant, M. (1971). Selected Works. Penguin Books.

Cita Chicago (17th ed.)

Cicero i Michael Grant. Selected Works. Harmondsworth [u.a.]: Penguin Books, 1971.

Cita MLA (8th ed.)

Cicero i Michael Grant. Selected Works. Penguin Books, 1971.