APA (7th ed.) Citation

Seneca, L. A., & Summers, W. C. (1913). Select letters of Seneca. Macmillan.

Chicago Style (17th ed.) Citation

Seneca, Lucius Annaeus, and Walter C. Summers. Select Letters of Seneca. London: Macmillan, 1913.

MLA (9th ed.) Citation

Seneca, Lucius Annaeus, and Walter C. Summers. Select Letters of Seneca. Macmillan, 1913.