Cita APA (7a ed.)

Cicero, M. T., & Newton, B. P. (2016). On duties. Cornell University Press.

Cita Chicago Style (17a ed.)

Cicero, Marcus Tullius, y Benjamin Patrick Newton. On Duties. Ithaca: Cornell University Press, 2016.

Cita MLA (8a ed.)

Cicero, Marcus Tullius, y Benjamin Patrick Newton. On Duties. Cornell University Press, 2016.