Citazione Stile APA (7a Edizione)

Porter, M. E. (2008). On competition. Harvard Business School Press.

Citazione stile Chigago Style (17a edizione)

Porter, Michael E. On Competition. Boston: Harvard Business School Press, 2008.

Citatione MLA (9a ed.)

Porter, Michael E. On Competition. Harvard Business School Press, 2008.