Citazione APA

Porter, M. E. (1980). Competitive strategy: Techniques for analyzing industries and competitors. New York ; London: Free Press.

Stile di citazione Chicago

Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York ; London: Free Press, 1980.

Citazione MLA

Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York ; London: Free Press, 1980.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.