APA (7th ed.) Citation

Augustine, S., & Pontifex, M. (1955). The problem of free choice. Newman Press.

Chicago Style (17th ed.) Citation

Augustine, Saint, and Mark Pontifex. The Problem of Free Choice. Westminster, Md.: Newman Press, 1955.

MLA (9th ed.) Citation

Augustine, Saint, and Mark Pontifex. The Problem of Free Choice. Newman Press, 1955.