• G. Bonner, “Augustine and Pelagianism,” Augustinian Studies 23 (1992), 33-51 and 24 (1993), 27-47.

• M.T. Clark, Augustine: Philosopher of Freedom (New York: 1958).

• W.L. Craig, “Augustine on Foreknowledge and Free Will,” Augustinian Studies 15 (1984), 41-67.

• A. Dihle, The Theory of Will in Classical Antiquity (Berkeley: 1982).

• G. O’Daly, “Predestination and Freedom in Augustine’s Ethics,” in G. Vesey (ed.), The Philosophy in Christianity (Cambridge: 1989).

• J.M. Rist, “Augustine on Free Will and Predestination,” Journal of Theological Studies 20 (1969), 420-47.