APA (7th ed.) Citation

Proclus, a. 4., Opsomer, J., & Steel, C. G. (2012). Ten problems concerning providence. Bristol Classical Press.

Chicago Style (17th ed.) Citation

Proclus, approximately 410-485, Jan Opsomer, and Carlos G. Steel. Ten Problems Concerning Providence. London: Bristol Classical Press, 2012.

MLA (9th ed.) Citation

Proclus, approximately 410-485, et al. Ten Problems Concerning Providence. Bristol Classical Press, 2012.