The World Bank. (1989). World Development Report 1989. O.U.P.
Cita Chicago (17th ed.)The World Bank. World Development Report 1989. New York: O.U.P, 1989.
Cita MLA (9th ed.)The World Bank. World Development Report 1989. O.U.P, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.