1. وارنوک، مری (۱۳۸۰)، فلسفه اخلاق در سده بیستم، ترجمه ابوالقاسم فنایی، قم: بوستان کتاب.
2. صفوی، کوروش (1382)، «نگاهی به آرای فیلسوفان زبان در طرح نظریههای معنایی»، نشریه دانشکده ادبیات و علوم انسانی دانشگاه تبریز، ش 186.
3. Ayer, Alfred Jules (1952), Language, Truth and Logic; New York: Dover Publication, Inc.
4. Lacewing, Michael, “Two types of moral cognitivism,” Routledge, Available at: http://documents.routledge.
5. McCloskey, H. J. (1965), “D-Words, A-Words, G-Words,” Philosophical Studies, Vol. 16, No. 1.
6. McCloskey, H. J. (1961) “Nowell-Smith's Ethics,” Australasian Journal of Philosophy, 39, No. 3.
7. Miller, Alexander, (2014), Contemporary Metaethics: An Introduction, February, Polity.
8. Nowell-Smith, H. (1954), Ethics, A study of the words and concepts that we use for answering practical questions, making decisions, advising, warning and appraising conduct, Penguin Books.
9. Oxford Advance Learner's Dictionary (2010), 8th edition, Oxford University Press.
10. Roojen, Mark van, (2004), Moral Cognitivism vs. Non-Cognitivism, First published Fri Jan 23. Available at: http://plato.stanford.edu/entries/moral-cognitivism/
11. Stevenson, Charles L. (1963), Facts and Value, studies in Ethical Analysis, New Haven and London: Yale University Press.