Tohutoro APA (7th ed.)

Organization of Petroleum Exporting Countries. World oil outlook 2011.

Tohutoru Kātū Chicago

Organization of Petroleum Exporting Countries. World Oil Outlook 2011.

Tohutoro MLA

Organization of Petroleum Exporting Countries. World Oil Outlook 2011.

Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.