THE WORLD BANK. (1988). WORLD DEVELOPMENT REPORT 1988. OXFORD UNIVERSITY PRESS.
Dyfyniad Arddull ChicagoTHE WORLD BANK. WORLD DEVELOPMENT REPORT 1988. OXFORD: OXFORD UNIVERSITY PRESS, 1988.
Dyfyniad MLATHE WORLD BANK. WORLD DEVELOPMENT REPORT 1988. OXFORD UNIVERSITY PRESS, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.