APA (7th ed.) Citation

Cicero, M. T., & Copley, F. O. (1967). On old age: And On friendship. University of Michigan Press.

Chicago Style (17th ed.) Citation

Cicero, Marcus Tullius, and Frank O. Copley. On Old Age: And On Friendship. Ann Arbor: University of Michigan Press, 1967.

MLA (9th ed.) Citation

Cicero, Marcus Tullius, and Frank O. Copley. On Old Age: And On Friendship. University of Michigan Press, 1967.