Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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