APA-čujuhus (7. p.)

Oil, Gas, Coal & Electricity -- Quarterly Statistics -- Electricite, charbon, gaz et petrole -- statistiques trimestrielles. Organisation for Economic Cooperation & Development.

Chicago-čujuhus (17. p.)

Oil, Gas, Coal & Electricity -- Quarterly Statistics -- Electricite, Charbon, Gaz Et Petrole -- Statistiques Trimestrielles. Organisation for Economic Cooperation & Development.

MLA-čujuhus (9. p.)

Oil, Gas, Coal & Electricity -- Quarterly Statistics -- Electricite, Charbon, Gaz Et Petrole -- Statistiques Trimestrielles. Organisation for Economic Cooperation & Development.

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