Cita APA (7a ed.)

Mackie, J. L. (1987). Hume's moral theory ([1st pub., repr.].). Routledge & Kegan Paul.

Cita Chicago Style (17a ed.)

Mackie, John Leslie. Hume's Moral Theory. [1st pub., repr.]. London [etc.]: Routledge & Kegan Paul, 1987.

Cita MLA (9a ed.)

Mackie, John Leslie. Hume's Moral Theory. [1st pub., repr.]. Routledge & Kegan Paul, 1987.