Cita APA (7th ed.)
International Energy Agency & ProQuest (Firm). (2012). Gas medium-term market report 2012: Market trends and projections to 2017. OECD/IEA.
Cita Chicago (17th ed.)
International Energy Agency i ProQuest (Firm). Gas Medium-term Market Report 2012: Market Trends and Projections to 2017. Paris: OECD/IEA, 2012.
Cita MLA (9th ed.)
International Energy Agency i ProQuest (Firm). Gas Medium-term Market Report 2012: Market Trends and Projections to 2017. OECD/IEA, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.