The Cambridge companion to Augustine.

MLA

Kretzmann, Norman, and Eleonore Stump. The Cambridge Companion to Augustine. Cambridge: Cambridge university press, 2001.

APA

Kretzmann, N., & Stump, E. (2001). The Cambridge companion to Augustine. Cambridge: Cambridge university press.

Chicago

Kretzmann, Norman. ed., and Eleonore Stump ed. The Cambridge Companion to Augustine. Cambridge: Cambridge university press, 2001.