Lua APA (7ú heag.)
Al-Hassan, A. (2009). A coincident indicator of the Gulf Cooperation Council (GCC) business cycle. International Monetary Fund.
Lua i Stíl Chicago (17ú heag.)
Al-Hassan, Abdullah. A Coincident Indicator of the Gulf Cooperation Council (GCC) Business Cycle. [Washington D.C.]: International Monetary Fund, 2009.
Lua MLA (9ú heag.)
Al-Hassan, Abdullah. A Coincident Indicator of the Gulf Cooperation Council (GCC) Business Cycle. International Monetary Fund, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.