Citazione Stile APA (7a Edizione)

Porter, M. E. (1998). Competitive Advantage (6th.). Tata McGraw-Hill Publishing Company Ltd.

Citazione stile Chigago Style (17a edizione)

Porter, Michael E. Competitive Advantage. 6th. New Delhi: Tata McGraw-Hill Publishing Company Ltd, 1998.

Citatione MLA (9a ed.)

Porter, Michael E. Competitive Advantage. 6th. Tata McGraw-Hill Publishing Company Ltd, 1998.