Citace podle APA (7th ed.)

(1979). OPEC national oil company profiles. Secretariat, Organization of the Petroleum Exporting Countries.

Citace podle Chicago (17th ed.)

OPEC National Oil Company Profiles. Vienna: Secretariat, Organization of the Petroleum Exporting Countries, 1979.

Citace podle MLA (8th ed.)

OPEC National Oil Company Profiles. Secretariat, Organization of the Petroleum Exporting Countries, 1979.

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