Gaya APA

Allison, H, E. (2011). Immanuel Kant's Groundwork for the metaphysics of morals : a commentary . New York: Oxford University Press.

Gaya MLA

Allison, Henry, E.. "Immanuel Kant's Groundwork for the metaphysics of morals : a commentary". New York: Oxford University Press, 2011. e-book.