APA (7th ed.) Citation

Porter. (1980). Competitive strategy: Techniques for analyzing industries and competitors. Free Press.

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

Porter. Competitive Strategy: Techniques for Analyzing Industries and Competitors. Free Press, 1980.

Warning: These citations may not always be 100% accurate.