APA-viite (7. p.)
International Energy Agency & ProQuest (Firm). (2011). Energy policies of IEA countries: Poland 2011. OECD ; International Energy Agency.
Chicago-viite (17. p.)
International Energy Agency ja ProQuest (Firm). Energy Policies of IEA Countries: Poland 2011. Paris: OECD ; International Energy Agency, 2011.
MLA-viite (9. p.)
International Energy Agency ja ProQuest (Firm). Energy Policies of IEA Countries: Poland 2011. OECD ; International Energy Agency, 2011.
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