APA (7th ed.) Citation

Cicero, M. T., Atticus, T. P., & Shackleton Bailey, D. R. (1999). Letters to Atticus. Harvard University Press.

Chicago Style (17th ed.) Citation

Cicero, Marcus Tullius, Titus Pomponius Atticus, and D. R. Shackleton Bailey. Letters to Atticus. Cambridge, Mass.: Harvard University Press, 1999.

MLA (9th ed.) Citation

Cicero, Marcus Tullius, et al. Letters to Atticus. Harvard University Press, 1999.