APA (7th ed.) Citation

Cicero, M. T., Copley, F. O. e. a. t., & Cicero, m. T. O. f. (1967). On old age, and on friendship. University of Michigan Press.

Chicago Style (17th ed.) Citation

Cicero, Marcus Tullius, Frank Olin ed. and tr Copley, and marcus Tullius. On friendship Cicero. On Old Age, and on Friendship. Ann Arbor: University of Michigan Press, 1967.

MLA (9th ed.) Citation

Cicero, Marcus Tullius, et al. On Old Age, and on Friendship. University of Michigan Press, 1967.