Cita APA (7th ed.)

Kant, I., & Gregor, M. J. (1996). Practical philosophy. Cambridge University Press.

Cita Chicago (17th ed.)

Kant, Immanuel, i Mary J. Gregor. Practical Philosophy. Cambridge: Cambridge University Press, 1996.

Cita MLA (9th ed.)

Kant, Immanuel, i Mary J. Gregor. Practical Philosophy. Cambridge University Press, 1996.