APA (7th ed.) Citation

Porter, M. E. (1998). Competitive advantage: Creating and sustaining superior performance ; with a new introduction. Free Press.

Chicago Style (17th ed.) Citation

Porter, Michael E. Competitive Advantage: Creating and Sustaining Superior Performance ; with a New Introduction. New York [u.a.]: Free Press, 1998.

MLA (9th ed.) Citation

Porter, Michael E. Competitive Advantage: Creating and Sustaining Superior Performance ; with a New Introduction. Free Press, 1998.