Dyfyniad APA

Pearce, D. W. (1993). World Without End: Economics, Enviroment, nad Sustainable Development. Oxford University.

Dyfyniad Arddull Chicago

Pearce, David W. World Without End: Economics, Enviroment, Nad Sustainable Development. New Delhi: Oxford University, 1993.

Dyfyniad MLA

Pearce, David W. World Without End: Economics, Enviroment, Nad Sustainable Development. Oxford University, 1993.

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