Lua APA (7ú heag.)

OECD iLibrary, Organisation for Economic Co-operation and Development, International Energy Agency, & Van der Hoeven, M. (2013). Coal: Medium-term market report 2013 : market trends and projects to 2018. OECD.

Lua i Stíl Chicago (17ú heag.)

OECD iLibrary, Organisation for Economic Co-operation and Development, International Energy Agency, agus Maria Van der Hoeven. Coal: Medium-term Market Report 2013 : Market Trends and Projects to 2018. Paris: OECD, 2013.

Lua MLA (9ú heag.)

OECD iLibrary, et al. Coal: Medium-term Market Report 2013 : Market Trends and Projects to 2018. OECD, 2013.

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