APA (7th ed.) Citation

Kant, I., Gregor, M. J., & Sullivan, R. J. (1996). The metaphysics of morals. Cambridge University Press.

Chicago Style (17th ed.) Citation

Kant, Immanuel, Mary J. Gregor, and Roger J. Sullivan. The Metaphysics of Morals. Cambridge: Cambridge University Press, 1996.

MLA (8th ed.) Citation

Kant, Immanuel, et al. The Metaphysics of Morals. Cambridge University Press, 1996.