Society for International Development. North-South Roundtable & Foster, J. (1981). Energy for development, an international challenge: Prepared for the North-South Roundtable of the Society for International Development. Praeger.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումSociety for International Development. North-South Roundtable and John Foster. Energy for Development, an International Challenge: Prepared for the North-South Roundtable of the Society for International Development. New York: Praeger, 1981.
MLA (9րդ խմբ.) ՄեջբերումSociety for International Development. North-South Roundtable and John Foster. Energy for Development, an International Challenge: Prepared for the North-South Roundtable of the Society for International Development. Praeger, 1981.
Զգուշացում. այս մեջբերումները միշտ չէ, որ կարող են 100% ճշգրիտ լինել.