APA引文

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

Chicago Edition Citation

Porter, Michael E. The Competitive Advantage of Nations. London: Macmillan, 1990.

MLA引文

Porter, Michael E. The Competitive Advantage of Nations. Macmillan, 1990.

警告：這些引文格式不一定是100％准確.