APA (7th ed.) Citation

Cicero, M. T. (1928). Cicero: In twenty-eight volumes. Harvard University Press.

Chicago Style (17th ed.) Citation

Cicero, Marcus Tullius. Cicero: In Twenty-eight Volumes. Cambridge, Massachusetts: Harvard University Press, 1928.

MLA (9th ed.) Citation

Cicero, Marcus Tullius. Cicero: In Twenty-eight Volumes. Harvard University Press, 1928.