APA (7th ed.) Citation

Kant, I., Wolff, R. P., & Beck, L. W. (1985). Foundations of the metaphysics of morals. Macmillan.

Chicago Style (17th ed.) Citation

Kant, Immanuel, Robert Paul Wolff, and Lewis White Beck. Foundations of the Metaphysics of Morals. New York: Macmillan, 1985.

MLA (9th ed.) Citation

Kant, Immanuel, et al. Foundations of the Metaphysics of Morals. Macmillan, 1985.