Dyfyniad APA

Porter, R. C. (2002). The economics of waste. Washington, DC: Resources for the Future.

Dyfyniad Arddull Chicago

Porter, Richard C. The Economics of Waste. Washington, DC: Resources for the Future, 2002.

Dyfyniad MLA

Porter, Richard C. The Economics of Waste. Washington, DC: Resources for the Future, 2002.

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