1. Appiah, Kwame Anthony (1992). In my Father's house: Africa in the philosophy of culture. Oxford: Oxford University Press.
2. Appiah, Kwame Anthony. (1996). Race, culture, identity: Misunderstood connections. In The Tanner lectures on human values XVII, ed. Grethe B. Peterson, 51–136. Salt Lake City: University of Utah Press.
3. Austin, John. (1956). A plea for excuses. Proceedings of the Aristotelian Society 57: 1–30.
4. Ayer, A. J. (1936). Language, truth and logic. London: Victor Gollancz, Ltd.
5. Burgess, Alexis, and Plunkett, David. 2013a. Conceptual Ethics I. Philosophy Compass 8 (12):1091–1101.