APA (7th ed.) Citation

Seneca, L. A., & Costa, C. D. N. (1997). Dialogues and letters. Penguin Books.

Chicago Style (17th ed.) Citation

Seneca, Lucius Annaeus., and Charles Desmond Nuttall Costa. Dialogues and Letters. London: Penguin Books, 1997.

MLA (8th ed.) Citation

Seneca, Lucius Annaeus., and Charles Desmond Nuttall Costa. Dialogues and Letters. Penguin Books, 1997.