Dyfyniad APA
International Energy Agency, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2007). Oil supply security: Emergency response of IEA countries, 2007. OECD/IEA.
Dyfyniad Arddull Chicago
International Energy Agency, Organisation for Economic Co-operation and Development, and ProQuest (Firm). Oil Supply Security: Emergency Response of IEA Countries, 2007. Paris: OECD/IEA, 2007.
Dyfyniad MLA
International Energy Agency, et al. Oil Supply Security: Emergency Response of IEA Countries, 2007. OECD/IEA, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.