Cita APA (7a ed.)

Organization of Petroleum Exporting Countries. OPEC energy review. Wiley InterScience.

Cita Chicago Style (17a ed.)

Organization of Petroleum Exporting Countries. OPEC Energy Review. [Oxford]: Wiley InterScience.

Cita MLA (8a ed.)

Organization of Petroleum Exporting Countries. OPEC Energy Review. Wiley InterScience.

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