Dyfyniad APA

Pearce, D. W., & Barbier, E. B. (2000). Blueprint for a sustainable economy. Earthscan.

Dyfyniad Arddull Chicago

Pearce, David William, and Edward B. Barbier. Blueprint for a Sustainable Economy. London: Earthscan, 2000.

Dyfyniad MLA

Pearce, David William, and Edward B. Barbier. Blueprint for a Sustainable Economy. Earthscan, 2000.

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