United States. Bureau of the Census. (1980). International population dynamics, 1950-79: Demographic estimates for countries with a population of 5 million or more. The Bureau.
Lua i Stíl Chicago (17ú heag.)United States. Bureau of the Census. International Population Dynamics, 1950-79: Demographic Estimates for Countries with a Population of 5 Million or More. Washington: The Bureau, 1980.
Lua MLA (9ú heag.)United States. Bureau of the Census. International Population Dynamics, 1950-79: Demographic Estimates for Countries with a Population of 5 Million or More. The Bureau, 1980.
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