PORTER MICHAEL E. (2004). GLOBAL COMPETITIVENESS REPORT 2004-2005. PALGRAVE MACMILLAN.
Lua i Stíl Chicago (17ú heag.)PORTER MICHAEL E. GLOBAL COMPETITIVENESS REPORT 2004-2005. GREAT BRITAIN: PALGRAVE MACMILLAN, 2004.
Lua MLA (9ú heag.)PORTER MICHAEL E. GLOBAL COMPETITIVENESS REPORT 2004-2005. PALGRAVE MACMILLAN, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.