Kiechel, W. The Lords of Strategy. Harvard Business Review Press.
Lua i Stíl Chicago (17ú heag.)Kiechel, Walter. The Lords of Strategy. Harvard Business Review Press.
Lua MLA (9ú heag.)Kiechel, Walter. The Lords of Strategy. Harvard Business Review Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.