Dyfyniad APA

(1972). Problems of environmental economics; record of the Seminar held at the OECD in summer 1971. [Paris]: Organisation for Economic Co-operation and Development.

Dyfyniad Arddull Chicago

Problems of Environmental Economics; Record of the Seminar Held At the OECD in Summer 1971. [Paris]: Organisation for Economic Co-operation and Development, 1972.

Dyfyniad MLA

Problems of Environmental Economics; Record of the Seminar Held At the OECD in Summer 1971. [Paris]: Organisation for Economic Co-operation and Development, 1972.

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