Cita APA (7th ed.)
International Energy Agency & ProQuest (Firm). (2012). Coal medium-term market report. OECD/IEA.
Cita Chicago (17th ed.)
International Energy Agency i ProQuest (Firm). Coal Medium-term Market Report. [Paris]: OECD/IEA, 2012.
Cita MLA (9th ed.)
International Energy Agency i ProQuest (Firm). Coal Medium-term Market Report. OECD/IEA, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.