Elwan, O. (1983). The Organization of Arab Petroleum-Exporting Countries. Encyclopedia of public international law ; 6: Regional cooperation, organizations and problems.
Chicago-Zitierstil (17. Ausg.)Elwan, Omaia. "The Organization of Arab Petroleum-Exporting Countries." Encyclopedia of Public International Law ; 6: Regional Cooperation, Organizations and Problems 1983.
MLA-Zitierstil (9. Ausg.)Elwan, Omaia. "The Organization of Arab Petroleum-Exporting Countries." Encyclopedia of Public International Law ; 6: Regional Cooperation, Organizations and Problems, 1983.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.