Dyfyniad APA

(2013). Gas medium-term market report 2013: Market trends and projections to 2018. OECD.

Dyfyniad Arddull Chicago

Gas Medium-term Market Report 2013: Market Trends and Projections to 2018. [Place of publication not identified]: OECD, 2013.

Dyfyniad MLA

Gas Medium-term Market Report 2013: Market Trends and Projections to 2018. OECD, 2013.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.