منابع:
1-Ethics -louis P. Pot man. Discorering Right and wrong Third Edition. united states Milrtary Academy
2-Essay on liberty. thonost mill, penguin boos 1971
3-Aristotle, Nicomachean Ethics, trans, D. Ross. oxford university press, 1980.
4-After uirtue-Alasdair-Macirtyre. published by the university of Notre Dame press. Nater Dame. Idian. second ed.
5-Great books of the Western world mortimer editor in cbief. ADLER. J.
6-Plato-Republic-trans, R. Waterfield-Oxford university press. 1995.