APA (7th ed.) Citation

PORTER. (1990). The competitive advantage of nations. Macmillan Press.

Chicago Style (17th ed.) Citation

PORTER. The Competitive Advantage of Nations. London: Macmillan Press, 1990.

MLA (9th ed.) Citation

PORTER. The Competitive Advantage of Nations. Macmillan Press, 1990.

Warning: These citations may not always be 100% accurate.