Porter, M. E. (1985). Competitive advantage: Creating and sustaining superior performance. The Free Press.
Citace podle Chicago (17th ed.)Porter, Michael E. Competitive Advantage: Creating and Sustaining Superior Performance. New York: The Free Press, 1985.
Citace podle MLA (9th ed.)Porter, Michael E. Competitive Advantage: Creating and Sustaining Superior Performance. The Free Press, 1985.
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