Dyfyniad APA

(2000). Entering the 21st Century world development report 1999/2000. IBRD.

Dyfyniad Arddull Chicago

Entering the 21st Century World Development Report 1999/2000. Washington: IBRD, 2000.

Dyfyniad MLA

Entering the 21st Century World Development Report 1999/2000. IBRD, 2000.

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