Porter, M. E. (1990). Competitive strategy: Techniques for analyzing industries and competitors. The Free Press.
Cita Chicago Style (17a ed.)Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York: The Free Press, 1990.
Cita MLA (8a ed.)Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. The Free Press, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.