Bank, T. W. Entering the 21 st century#world development report 1999/2000. Oxford University Press.
Dyfyniad Arddull ChicagoBank, The World. Entering the 21 St Century#world Development Report 1999/2000. Oxford University Press.
Dyfyniad MLABank, The World. Entering the 21 St Century#world Development Report 1999/2000. Oxford University Press.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.