Παραπομπή APA
Vallenilla, L. (1975). Oil, the making of a new economic order: Venezuelan oil and OPEC. New York: McGraw-Hill.
Παραπομπή Chicago StyleVallenilla, Luis. Oil, the Making of a New Economic Order: Venezuelan Oil and OPEC. New York: McGraw-Hill, 1975.
Παραπομπή MLAVallenilla, Luis. Oil, the Making of a New Economic Order: Venezuelan Oil and OPEC. New York: McGraw-Hill, 1975.
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