APA-viite (7. p.)
Organisation for Economic Co-operation and Development, International Energy Agency, & ProQuest (Firm). (2011). Coal: Medium-term market report 2011 : market trends and projections to 2016. OECD/IEA.
Chicago-viite (17. p.)
Organisation for Economic Co-operation and Development, International Energy Agency, ja ProQuest (Firm). Coal: Medium-term Market Report 2011 : Market Trends and Projections to 2016. Paris: OECD/IEA, 2011.
MLA-viite (9. p.)
Organisation for Economic Co-operation and Development, et al. Coal: Medium-term Market Report 2011 : Market Trends and Projections to 2016. OECD/IEA, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.