World Bank. (1981). World development report 1981. Published for the World Bank, Oxford University Press.
Lua i Stíl Chicago (17ú heag.)World Bank. World Development Report 1981. New York ; Oxford: Published for the World Bank, Oxford University Press, 1981.
Lua MLA (8ú heag.)World Bank. World Development Report 1981. Published for the World Bank, Oxford University Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.