クリスティン・コースガード
(1986) "Skepticism about Practical Reason," The Journal of Philosophy 83 (1): 5-25. (Reprinted in as ch.11 in Korsgaard (1996b), pp. 311–334.)
(1997) "The Normativity of Instrumental Reason", ch. 8 in Garrett Cullity & Berys Gaut (eds.) Ethics and Practical Reason, Oxford: Clarendon Press, pp. 215–54. (Reprinted with Afterword in Korsgaard (2008), pp. 27–69.)