APA引文

Porter, M. E. (1990). The competitive advantage of nations. Free Press.

Chicago Style (17th ed.) Citation

Porter, Michael E. The Competitive Advantage of Nations. New York: Free Press, 1990.

MLA引文

Porter, Michael E. The Competitive Advantage of Nations. Free Press, 1990.

警告：這些引文格式不一定是100％准確.