Style de citation APA (7e éd.)

PORTER, M. E. (1980). Competitive strategy: Techniques for analyzing industries and competitors. The Free Press.

Style de citation Chicago (17e éd.)

PORTER, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York: The Free Press, 1980.

Style de citation MLA (9e éd.)

PORTER, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. The Free Press, 1980.