APA (7th ed.) Citation

McHugh, J. A., & Callan, C. J. (1929). Moral theology. Wagner.

Chicago Style (17th ed.) Citation

McHugh, John A., and Charles J. Callan. Moral Theology. New York: Wagner, 1929.

MLA (9th ed.) Citation

McHugh, John A., and Charles J. Callan. Moral Theology. Wagner, 1929.