APA استشهاد

Frank,Isaiah. (1981). Trade policy issues for the developing countries in the 1980's. World Bank.

استشهاد بنمط شيكاغو

Frank,Isaiah. Trade Policy Issues for the Developing Countries in the 1980's. Washington: World Bank, 1981.

MLA استشهاد

Frank,Isaiah. Trade Policy Issues for the Developing Countries in the 1980's. World Bank, 1981.