Cita APA (7a ed.)

Porter, M. E. (2008). Competitive strategy: Techniques for analyzing industries and competitors. Book21 Publishing Group.

Cita Chicago Style (17a ed.)

Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. Paju: Book21 Publishing Group, 2008.

Cita MLA (9a ed.)

Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. Book21 Publishing Group, 2008.