A. and D. , Hume on the Moral difference between Human and other Animals, vol.12, pp.303-316, 1995.

T. L. Beauchamp and . Hume, Journal of Medicine and Philosophy, vol.24, pp.322-335, 1999.

D. Boyle and . Hume, Animal Reason, vol.29, pp.3-28, 2003.

A. E. Pitson, The Nature of Humean Animals, vol.19, pp.301-316, 1993.

M. J. Sedler, «. Hume, and . The-animals, Southern Journal of Philosophy, vol.15, pp.361-372, 1977.

K. E. Tranöy and . Hume-on-morals, The Journal of Philosophy, vol.56, pp.94-102, 1999.

, HNR, op. cit, p.109