United States. Department of Commerce. Bureau of the Census. (1975). World population, 1975: Recent demographic estimates for the countries and regions of the world. U. S. Government Printing Office.
Style de citation Chicago (17e éd.)United States. Department of Commerce. Bureau of the Census. World Population, 1975: Recent Demographic Estimates for the Countries and Regions of the World. Washington: U. S. Government Printing Office, 1975.
Style de citation MLA (9e éd.)United States. Department of Commerce. Bureau of the Census. World Population, 1975: Recent Demographic Estimates for the Countries and Regions of the World. U. S. Government Printing Office, 1975.
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