Porter, M. E. (1998). The competitive advantage of nations: With a new introduction. New York: Free Press.
Chicago Style CitationPorter, Michael E. The Competitive Advantage of Nations: With a New Introduction. New York: Free Press, 1998.
Cita MLAPorter, Michael E. The Competitive Advantage of Nations: With a New Introduction. New York: Free Press, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.