APA-viite (7. p.)

Porter, M. E. (2004). Competitive Advantage: Creating and Sustaining Superior Performance. Free Press.

Chicago-viite (17. p.)

Porter, Michael E. Competitive Advantage: Creating and Sustaining Superior Performance. New York: Free Press, 2004.

MLA-viite (9. p.)

Porter, Michael E. Competitive Advantage: Creating and Sustaining Superior Performance. Free Press, 2004.