1. K. Davis, World Urbanization 1950–1970, Volume I: Basic Data for Cities, Countries, and Region Population Monograph Series, No. 4 (Berkeley: University of California, 1969) Table A.
2. D. T. Lakdawala et al., Work, Wages and Well-Being in an Indian Metropolis (Bombay: University of Bombay, 1963).
3. S. N. Sen, City of Calcutta: A Socio-Economic Survey (Calcutta: Bookland Private, Ltd., 1960).
4. J. Culliton, ‘Habitat: U.N. Conference to Face Crises in Human Settlements’, Science, 190, 4220 (19 December 1975) pp. 1182–3.