International Demographic Data Center. (1980). International population dynamics, 1950-79: Demographic estimates for countries with a population of 5 million or more. s.n.
Chicago-Zitierstil (17. Ausg.)International Demographic Data Center. International Population Dynamics, 1950-79: Demographic Estimates for Countries with a Population of 5 Million or More. Washington, D.C: s.n, 1980.
MLA-Zitierstil (9. Ausg.)International Demographic Data Center. International Population Dynamics, 1950-79: Demographic Estimates for Countries with a Population of 5 Million or More. s.n, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.