- Crisp R (2013). Supererogation and virtue. In: Timmons M, editor. Oxford studies in normative ethics: Volume 3. Oxford: Oxford University Press. p. 13-34.
- Eslami SM, Archer A (2024). The cautionary account of supererogation. The Philosophical Quarterly.
- Ferry M (2013). Does morality demand our very best? On moral prescriptions and the line of duty. Philosophical Studies. 165(2):573-589.
- Gert J (2003). Requiring and justifying: Two dimensions of normative strength. Erkenntnis. 59(1):5-36.
- Gert J (2013). Overridingness, moral. In: LaFollette H, editor. The international encyclopedia of ethics. Hoboken: Wiley-Blackwell.
- Hajighasemi MR (2023). Supererogation from ethics to epistemology [MA dissertation]. Tehran: Tarbiat Modares University. [Persian]
- Heyd D (2015). Can virtue ethics account for supererogation?. Royal Institute of Philosophy Supplements. 77:25-47.
- Horgan T, Timmons M (2010). Untying a knot from the inside out: Reflections on the “Paradox” of supererogation. Social Philosophy and Policy. 27(2):29-63.
- Kawall J (2003). Self-regarding supererogatory actions. Journal of Social Philosophy. 34(3):487-498.
- Miller C (2019). Overview of contemporary metaethics and normative ethical theory. Eslami M, translator. Tehran: Ansoo Publication. [Persian]
- Portmore DW (2021). Morality and practical reasons. Cambridge: Cambridge University Press.
- Scanlon TM (2014). Being realistic about reasons. Oxford: Oxford University Press.
- Tusi N (1985). Nasirean Ethics. Minavi M, Heidari A, editors. Tehran: Kharazmi. [Persian]
- Urmson JO (1958). Saints and heroes. In: Melden AI, editor. Essays in moral philosophy. Seattle: University of Washington Press. p. 198-216.
