Lockheed, M. E., & Verspoor, A. (1991). Improving primary education in developing countries. Published for the World Bank, Oxford University Press.

Lockheed, Marlaine E., and Adriaan Verspoor. Improving Primary Education in Developing Countries. Washington, D.C.: Published for the World Bank, Oxford University Press, 1991.

Lockheed, Marlaine E., and Adriaan Verspoor. Improving Primary Education in Developing Countries. Published for the World Bank, Oxford University Press, 1991.