Cita APA

Porter, M. E. (2004). Competitive strategy: Techniques for analyzing industries and competitors. New York: the free press.

Citación estilo Chicago

Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York: the free press, 2004.

Cita MLA

Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York: the free press, 2004.