Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.