Dyfyniad APA

Organisation for Economic Co-operation and Development. (1979). Energy policies and programmes of IEA countries. Paris: Organisation for Economic Co-operation and Development.

Dyfyniad Arddull Chicago

Organisation for Economic Co-operation and Development. Energy Policies and Programmes of IEA Countries. Paris: Organisation for Economic Co-operation and Development, 1979.

Dyfyniad MLA

Organisation for Economic Co-operation and Development. Energy Policies and Programmes of IEA Countries. Paris: Organisation for Economic Co-operation and Development, 1979.

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