Dyfyniad APA

(1993). World development report 1992: Development and the Environment. New York: Oxford Univ.

Dyfyniad Arddull Chicago

World Development Report 1992: Development and the Environment. New York: Oxford Univ, 1993.

Dyfyniad MLA

World Development Report 1992: Development and the Environment. New York: Oxford Univ, 1993.

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