Dyfyniad APA

International Energy Agency, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2008). IEA energy policies review: The European Union - 2008. OECD/IEA.

Dyfyniad Arddull Chicago

International Energy Agency, Organisation for Economic Co-operation and Development, and ProQuest (Firm). IEA Energy Policies Review: The European Union - 2008. Paris: OECD/IEA, 2008.

Dyfyniad MLA

International Energy Agency, et al. IEA Energy Policies Review: The European Union - 2008. OECD/IEA, 2008.

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