Dyfyniad APA

WORLD.. (1991). World development report 1991: The challenge of development. Oxford Univ. Press.

Dyfyniad Arddull Chicago

WORLD.. World Development Report 1991: The Challenge of Development. Oxford: Oxford Univ. Press, 1991.

Dyfyniad MLA

WORLD.. World Development Report 1991: The Challenge of Development. Oxford Univ. Press, 1991.

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