APA

Bureau of the Census.international Demographic Data Center, . (1980). World population 1979 : recent demographic estimates for the countries and regions of the world. Washington: The Bureau.

Chicago

Bureau of the Census.international Demographic Data Center, . 1980. World population 1979 : recent demographic estimates for the countries and regions of the world. Washington: The Bureau.

Harvard

Bureau of the Census.international Demographic Data Center, . (1980). World population 1979 : recent demographic estimates for the countries and regions of the world. Washington: The Bureau.

MLA

Bureau of the Census.international Demographic Data Center, . World population 1979 : recent demographic estimates for the countries and regions of the world. Washington: The Bureau. 1980.