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.
芝加哥风格引文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.
MLA引文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.
警告：这些引文格式不一定是100％准确.