Cita APA (7a ed.)

Kreeft, P. (1992). Back to virtue: Traditional moral wisdom for modern moral confusion. Ignatius.

Cita Chicago Style (17a ed.)

Kreeft, Peter. Back to Virtue: Traditional Moral Wisdom for Modern Moral Confusion. San Francisco: Ignatius, 1992.

Cita MLA (9a ed.)

Kreeft, Peter. Back to Virtue: Traditional Moral Wisdom for Modern Moral Confusion. Ignatius, 1992.