United Nations. Natural Resources and Energy Division. Dept. of Technical Co-operation for Development & Petroleum Exploration Strategies in Developing Countries (1981 : Hague). Petroleum exploration strategies in developing countries: Proceedings of a United Nations meeting held in The Hague 16-20 March 1981.
Chicago Style (17th ed.) CitationUnited Nations. Natural Resources and Energy Division. Dept. of Technical Co-operation for Development and Petroleum Exploration Strategies in Developing Countries (1981 : Hague). Petroleum Exploration Strategies in Developing Countries: Proceedings of a United Nations Meeting Held in The Hague 16-20 March 1981.
MLA (9th ed.) CitationUnited Nations. Natural Resources and Energy Division. Dept. of Technical Co-operation for Development and Petroleum Exploration Strategies in Developing Countries (1981 : Hague). Petroleum Exploration Strategies in Developing Countries: Proceedings of a United Nations Meeting Held in The Hague 16-20 March 1981.