Barnes, Barry, and David Bloor. (1982). "Relativism, Rationalism and the Sociology of Knowledge." Rationality and Relativism: 21-47.
Feyerabend, Paul. (1978). Science in a Free Society (SFS). London: NLB.
Frankena William K. (2014). Ethics. Translated by Hadi Sadeqi. Qom: Taha Cultural Institute. (In Persian)
Hare, Richard Mervin. (1981). Moral Thinking, Its Levels, Method, and Point. New York: Oxford University Press.
Hare, Richard Mervin. (1989). “Ethics”. In The Concise Encyclopedia of Western Philosophy and Philosophers, edited by James Opie Urmson & Jonathan Rée.
Hare, Richard Mervin. (1992). “Universalizability”. Encyclopedia of Ethics, Vol. 2. Edited by Lawrence C. Becker. Chicago and London: St. JAMES Press.
Hare, Richard Mervin. (1994). “Moral Philosophy”. Translated by Saeidi-Mehr. Keyhan Andishe, 52. (In Persian)
Hare, Richard Mervin. (2001). “Descriptive Meaning and Moral Principles”. Translated by Amir Divani. Arghanoon, 16. (In Persian)
Hare, Richard Mervin. (2005). Language of Morals. Translated by Amir Divani. Tehran: Taha Cultural Institute. (In Persian)
Hare, Richard Mervin. (2019). Applications of Moral Philosophy. Translated by Almasi, Kurush. Tehran: Mahris. (In Persian)
Hollingdale, R. J. (2009). A New History of Western Philosophy. Translated by Abdulhossein Azarang. Tehran: Qoqnoos. (In Persian)
Hoseini, Sayyid Akbar. (2002). “The Possibility of Moral Reasoning in Hare's Recommendationism”. Maʿrifat, 11 (54);
Jawadi, Muhsin, & Mustafa Salatin. (2014). “Report and Analysis on Ayatullah Jawadi Amuli's Viewpoint about the Ethical Relativism”. Revelatory Ethics, 1 (1): 73-100. (In Persian)
Kellenberger, J. (2008). Moral Relativism: A Dialogue. Rowman & Littlefield Publishers
Malayeri Muhammad Hossein. (2012). “Reflections on Relativism, Absolutism and Objectivity”. Rahbord, 21 (64): 293-323. (In Persian)
Mesbah Yazdi Muhammad Taqi. (2002). The Philosophy of Morality. Tehran: Islamic Development Organization. (In Persian)
Motahhari Murtiza. (2001). Collection of Works. Tehran: Sadra. (In Persian)
Nilson, Kai. (1967). “Ethical Relativism and the Facts of Cultural Relativy”. Social Research, 33: 35-49.
Pojman Louise. (1997). “Critique on Moral Relativism”. Translated by Mahmud Fathali. Naqd Va Nazar, 13-14: 324-43. (In Persian)
Pojman, Louise, & James Fieser. (2012). Ethics Discovering Right and Wrong. United States of America.
Ralz John. (1997). “The Basis of Justice in the Theory of John Rawls”. Translated by Hossein Tavasoli. Naqd Va Nazar, 10-11: 122-49. (In Persian)
Shapiro, Dan. (2008). What is Ethical Relativism? Presentation to the Knights of the Round Table, Research Associate Sheldon Chumir Foundation for Ethics in Leadership October 14.
Sheehy, Paul. (2006). “Moral Relativism”. Richmond Journal of Philosophy, 13. http://www.richmond-philosophy.net/rjp/rjp_back_issues.php
Zamani, Mahdi. (2010). “An exploration of Recommendationism in Moral Philosophy”. Metaphysics, 9-10. (In Persian)
Zamani, Mahdi. (2012). “Method of Moral Reasoning in Hare”. Ethical Research, 3.
Zare‘ Ganjarodi, Murtiza. (2016) “Functions of Critical Thinking in Ethics from Hare's Point of View”. Philosophical Meditations, 18. (In Persian)