Cita APA (7a ed.)

Organization of Petroleum Exporting Countries. (1976). OPEC review. Blackwell Publishers.

Cita Chicago Style (17a ed.)

Organization of Petroleum Exporting Countries. OPEC Review. [Oxford]: Blackwell Publishers, 1976.

Cita MLA (9a ed.)

Organization of Petroleum Exporting Countries. OPEC Review. Blackwell Publishers, 1976.