APA-viite (7. p.)

International energy agency. (2002). World energy outlook 2002. Organisation economic cooperation and development.

Chicago-viite (17. p.)

International energy agency. World Energy Outlook 2002. France: Organisation economic cooperation and development, 2002.

MLA-viite (9. p.)

International energy agency. World Energy Outlook 2002. Organisation economic cooperation and development, 2002.

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