APA Style

Porter, Michael E.. (1985). Competitive advantage: creating and sustaining superior performance . New York: The Free Press.

Chicago Style

Porter, Michael E.. Competitive advantage: creating and sustaining superior performance. New York: The Free Press, 1985. Book.

MLA Style

Porter, Michael E.. Competitive advantage: creating and sustaining superior performance. New York: The Free Press, 1985. Book.

Turabian Style

Porter, Michael E.. Competitive advantage: creating and sustaining superior performance. New York: The Free Press, 1985. Book.