Dyfyniad APA

(1979). Trade policy for developing countries. World Bank.

Dyfyniad Arddull Chicago

Trade Policy for Developing Countries. Washington: World Bank, 1979.

Dyfyniad MLA

Trade Policy for Developing Countries. World Bank, 1979.

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