Dyfyniad APA

(2000). Environment and economic development (1st. ed.). Manak.

Dyfyniad Arddull Chicago

Environment and Economic Development. 1st. ed. N.Delhi: Manak, 2000.

Dyfyniad MLA

Environment and Economic Development. 1st. ed. Manak, 2000.

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