1. Bykvist, K. (2018). Agent-relative and agent-neutral reasons. In D. Star (Ed.), The Oxford handbook of reasons and normativity (pp. 821–838). Oxford: Oxford University Press.
2. Dancy, J. (1993). Moral reasons. Oxford: Blackwell.
3. Darwall, S. (2002). Welfare and rational care. Princeton: Princeton University Press.
4. Darwall, S. (2006). The second-person standpoint. Morality, respect, and accountability. Cambridge: Harvard University Press.
5. Double, R. (1999). Impartiality, and what we can ask of persons. American Philosophical Quarterly, 36, 149–158.