APA (7th ed.) Citation

Seneca, L. A., & Costa, C. D. N. (1988). 17 letters. Aris & Phillips.

Chicago Style (17th ed.) Citation

Seneca, Lucius Annaeus, and C. D. N. Costa. 17 Letters. Warminster: Aris & Phillips, 1988.

MLA (9th ed.) Citation

Seneca, Lucius Annaeus, and C. D. N. Costa. 17 Letters. Aris & Phillips, 1988.