Rujukan Pertubuhan Negara-negara Pengeksport Petroleum

  1. ↑ "Member Countries". OPEC. Dicapai pada 29 January 2017.
  2. ↑ "OPEC 172nd Meeting concludes". OPEC (Berita). 25 May 2017.
  3. ↑ "Field Listing: Population". The World Factbook. Central Intelligence Agency. Dicapai pada 21 December 2015.
  4. ↑ "Field Listing: Area". The World Factbook. Central Intelligence Agency. Dicapai pada 4 January 2009.
  5. ↑ "Production of Crude Oil including Lease Condensate 2016" (CVS download). US Energy Information Administration. Dicapai pada 28 May 2017.
  6. ↑ "Crude Oil Proved Reserves 2016" (CVS download). US Energy Information Administration. Dicapai pada 28 May 2017.
  7. ↑ Hayler, William B.; Keever, John M. (2003). American Merchant Seaman's Manual. Cornell Maritime Press. m/s. 14.3. ISBN 0-87033-549-9.
  8. ↑ OPEC melangkah dengan ahli baru - Kommersant Moscow
  9. ↑ Brazil bergembira dengan OPEC

Rujukan

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