Hamel, G. (2002). Competing for the future. TMGH.
Lua i Stíl Chicago (17ú heag.)Hamel, Gary. Competing for the Future. New Delhi: TMGH, 2002.
Lua MLA (9ú heag.)Hamel, Gary. Competing for the Future. TMGH, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.