Dyfyniad APA

(1972). The pollution crisis ( Volume 2 ): Official documents. Oceana Publications.

Dyfyniad Arddull Chicago

The Pollution Crisis ( Volume 2 ): Official Documents. New York: Oceana Publications, 1972.

Dyfyniad MLA

The Pollution Crisis ( Volume 2 ): Official Documents. Oceana Publications, 1972.

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