Porter, M. E. 1., & Porter, M. E. 1. (1985). Competitive advantage: Creating and sustaining superior performance. New York, New York: Free Press.
Chicago Style CitationPorter, Michael E. 1947-, and Michael E. 1947- Porter. Competitive Advantage: Creating and Sustaining Superior Performance. New York, New York: Free Press, 1985.
MLA CitationPorter, Michael E. 1947-, and Michael E. 1947- Porter. Competitive Advantage: Creating and Sustaining Superior Performance. New York, New York: Free Press, 1985.
Warning: These citations may not always be 100% accurate.