OPEC. (1977). Selected documents of the international petroleum industry 1975/1976. The Organization of the Petroleum Exporting Countries.
Chicago Style (17th ed.) CitationOPEC. Selected Documents of the International Petroleum Industry 1975/1976. The Organization of the Petroleum Exporting Countries, 1977.
MLA (8th ed.) CitationOPEC. Selected Documents of the International Petroleum Industry 1975/1976. The Organization of the Petroleum Exporting Countries, 1977.
Warning: These citations may not always be 100% accurate.