Gilbert, A., & Gugler, J. (1992). Cities, poverty and development: Urbanization in the Third World (2nd ed.). Oxford University Press.

Gilbert, Alan, and Josef Gugler. Cities, Poverty and Development: Urbanization in the Third World. 2nd ed. Oxford: Oxford University Press, 1992.

Gilbert, Alan, and Josef Gugler. Cities, Poverty and Development: Urbanization in the Third World. 2nd ed. Oxford University Press, 1992.