Aristotle. Nicomachean Ethics. Translated by W. D. Ross. Oxford: Clarendon, 1926. http://classics.mit.edu/Aristotle/nicomachaen.html.
Baumrin, Bernard. “Aristotle’s Ethical Intuitionism.” The New Scholasticism 42, no. 1 (Winter 1968), https://doi.org/10.5840/newscholas19684211
Bentham, Jeremy. A Fragment on Government, or, A Comment on the Commentaries: Being an Examination of What Is Delivered on the Subject of Government in General in the Introduction to Sir William Blackstones̓ Commentaries: with a Preface in Which Is given a Critique on the Work at Large. London: E. Wilson, 1823.
Craig, William Lane, and Kurtz, Paul. “The debate: is goodness without God good enough?” In Is Goodness Without God Enough: A Debate on Faith, Secularism, and Ethics, edited by Robert K. Garcia and Nathan L. King, 25–48. Plymouth UK: Rowman & Littlefield, 2009.
Guevara, Daniel. “The Impossibility of Supererogation in Kant’s Moral Theory.” Philosophy and Phenomenological Research 59, no. 3 (September 1999), doi:10.2307/2653784.
Huemer, Michael. Ethical Intuitionism. Basingstoke: Palgrave Macmillan, 2005.
Joachim, H.H. Aristotle: The Nicomachean Ethics: A Commentary. Edited by D.A. Ross. Oxford: Clarendon Press: 1951.
Jost, Lawrence. “Is Aristotle an Ethical Intuitionist?” Apeiron: A Journal for Ancient Philosophy and Science 10, no. 1 (May 1976), http://www.jstor.org/stable/40913374.
Kant, Immanuel. Grounding for the Metaphysics of Morals. Translated and edited by Allen W. Wood. New Haven: Yale University Press, 2003.
Macintyre, Alasdair. After Virtue. Notre Dame, IN: University of Notre Dame Press, 1984.
Martin, Rex. “Intuitionism and The Practical Syllogism in Aristotle’s Ethics.” Apeiron: A Journal for Ancient Philosophy and Science 11, no. 2 (December 1977), http://www.jstor.org/stable/40913397.
Miller, Alexander. An Introduction to Contemporary Metaethics. Cambridge: Polity Press, 2003.
Moore, G. E. Principia Ethica (1903). Buffalo, NY: Prometheus Books, 1988. http://fair-use.org/g-e-moore/principia-ethica/chapter-i.
Morriston, Wes. “God and the Ontological Foundation of Morality.” Religious Studies 48, no. 1 (March 2012): 15-34.
Wielenberg, Erik J. “God and Morality.” In Value and Virtue in a Godless Universe, 38–67. Cambridge University Press, 2005, doi:10.1017/CBO9781139165433.003.