APA (7th ed.) Citation

Cicero, M. T., Williams, W. G., & Cary, M. (1979). Cicero. Harvard University Press.

Chicago Style (17th ed.) Citation

Cicero, Marcus Tullius, W. Glynn Williams, and M. Cary. Cicero. Cambridge, Mass. ; London, England: Harvard University Press, 1979.

MLA (9th ed.) Citation

Cicero, Marcus Tullius, et al. Cicero. Harvard University Press, 1979.