APA-čujuhus (7. p.)
Al-Hassan, A. (2009). A coincident indicator of the Gulf Cooperation Council (GCC) business cycle. International Monetary Fund.
Chicago-čujuhus (17. p.)
Al-Hassan, Abdullah. A Coincident Indicator of the Gulf Cooperation Council (GCC) Business Cycle. [Washington D.C.]: International Monetary Fund, 2009.
MLA-čujuhus (9. p.)
Al-Hassan, Abdullah. A Coincident Indicator of the Gulf Cooperation Council (GCC) Business Cycle. International Monetary Fund, 2009.
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