1. F. A. Hayek on Constructivism and Ethics;Diamond;The Journal of Libertarian Studies,1980
2. Aristotle's Nicomachean Ethics
3. Friedman, Milton . “A Friedman Doctrine: The Social Responsibility of Business Is to Increase Its Profits.” New York Times, September 13, 1970. www.nytimes.com/1970/09/13/archives/a-friedman-doctrine-the-social-responsibility-of-business-is-to.html.