APA-ийн эшлэл(7 дахь хэвлэлт)
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.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Organisation for Economic Co-operation and Development, International Energy Agency, ба ProQuest (Firm). Coal: Medium-term Market Report 2011 : Market Trends and Projections to 2016. Paris: OECD/IEA, 2011.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Organisation for Economic Co-operation and Development, et al. Coal: Medium-term Market Report 2011 : Market Trends and Projections to 2016. OECD/IEA, 2011.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.