Stevens Mark. (2004). Exteme Management: What They Teach at Harvad Business Schools Advanced management Program. Profile Books.
Lua i Stíl Chicago (17ú heag.)Stevens Mark. Exteme Management: What They Teach at Harvad Business Schools Advanced Management Program. London: Profile Books, 2004.
Lua MLA (9ú heag.)Stevens Mark. Exteme Management: What They Teach at Harvad Business Schools Advanced Management Program. Profile Books, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.