APA (7th ed.) Citation

Proclus ca. 410-485, Opsomer, J., & Steel, C. G. (2003). On the existence of evils. Cornell University Press.

Chicago Style (17th ed.) Citation

Proclus ca. 410-485, Jan Opsomer, and Carlos G. Steel. On the Existence of Evils. Ithaca, N.Y: Cornell University Press, 2003.

MLA (9th ed.) Citation

Proclus ca. 410-485, et al. On the Existence of Evils. Cornell University Press, 2003.