Gaya APA

Porter, Michael E.. (1985). Competitive Advantage Creating and Sustaining Superior Performance . New York: Simon & Schuster Inc..

Gaya Chicago

Porter, Michael E.. Competitive Advantage Creating and Sustaining Superior Performance. New York: Simon & Schuster Inc., 1985. Text.

Gaya MLA

Porter, Michael E.. Competitive Advantage Creating and Sustaining Superior Performance. New York: Simon & Schuster Inc., 1985. Text.

Gaya Turabian

Porter, Michael E.. Competitive Advantage Creating and Sustaining Superior Performance. New York: Simon & Schuster Inc., 1985. Print.