APA-viite (7. p.)

Callen, T., Cherif, R., Hasanov, F., & Hegazy, A. (2014). Economic Diversification in the GCC: Past, Present, and Future. International Monetary Fund.

Chicago-viite (17. p.)

Callen, Tim, Reda Cherif, Fuad Hasanov, ja Amgad Hegazy. Economic Diversification in the GCC: Past, Present, and Future. Washington, D.C.: International Monetary Fund, 2014.

MLA-viite (8. p.)

Callen, Tim, et al. Economic Diversification in the GCC: Past, Present, and Future. International Monetary Fund, 2014.

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