APA (7th ed.) Citation

OPEC. (1976). Selected documents of the international petroleum industry 1973. Petroleum Exporting Countries.

Chicago Style (17th ed.) Citation

OPEC. Selected Documents of the International Petroleum Industry 1973. Petroleum Exporting Countries, 1976.

MLA (8th ed.) Citation

OPEC. Selected Documents of the International Petroleum Industry 1973. Petroleum Exporting Countries, 1976.

Warning: These citations may not always be 100% accurate.