एपीए उद्धरण

Porter, M. E. (1998). The competitive advantage of nations: With a new introduction. New York: Free Press.

शिकागो स्टाइल उद्धरण

Porter, Michael E. The Competitive Advantage of Nations: With a New Introduction. New York: Free Press, 1998.

एमएलए उद्धरण

Porter, Michael E. The Competitive Advantage of Nations: With a New Introduction. New York: Free Press, 1998.