APA (7th ed.) Citation

Benedikt XVI. Papst, Balthasar, H. U. v., & Harrison, G. (1986). Principles of Christian morality. Ignatius Press.

Chicago Style (17th ed.) Citation

Benedikt XVI. Papst, Hans Urs von Balthasar, and Graham Harrison. Principles of Christian Morality. San Francisco: Ignatius Press, 1986.

MLA (9th ed.) Citation

Benedikt XVI. Papst, et al. Principles of Christian Morality. Ignatius Press, 1986.