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.
Chicagoスタイル(17版)引用形式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.
MLA(9版)引用形式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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