APA-viite (7. p.)
Organisation for Economic Co-operation and Development & ProQuest (Firm). (2012). OECD environmental outlook to 2050. OECD.
Chicago-viite (17. p.)
Organisation for Economic Co-operation and Development ja ProQuest (Firm). OECD Environmental Outlook to 2050. Paris: OECD, 2012.
MLA-viite (9. p.)
Organisation for Economic Co-operation and Development ja ProQuest (Firm). OECD Environmental Outlook to 2050. OECD, 2012.
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