APA (7th ed.) Zitazioa
International Energy Agency. (2017). World energy investment 2017. OECD.
Chicago Style (17th ed.) Zitazioa
International Energy Agency. World Energy Investment 2017. Paris, [France]: OECD, 2017.
MLA (9th ed.) Zitazioa
International Energy Agency. World Energy Investment 2017. OECD, 2017.
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