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2. Ayer, A.J. 1936. Language, Truth, and Logic. London: Gollancz.
3. Bilgrami, A. 2023. Ethics as a Perceptual Discipline. In Self-knowledge and Moral Identity, ed. Ranjan K. Panda. New Delhi: Tulika Books.
4. Cohen, G.A. 1996. Reason, Humanity, and the Moral Laws. In The Sources of Normativity by C. Korsgaard, ed. Onora O’Neill. Cambridge: Cambridge University Press.
5. Guess, R. 1996. Morality and Identity. In The Sources of Normativity by C. Korsgaard, ed. Onora O’Neill. Cambridge: Cambridge University Press.