Organizace spojených národů. Department of International Economic and Social Affairs. The Sex and age distributions of population: the 1990 revision of the United Nations global population estimates and projections. New York: United Nations, 1991. viii, 391 s. Population studies; no. 122.
(1991). The Sex and age distributions of population: The 1990 revision of the United Nations global population estimates and projections. New York: United Nations.
Styl ChicagoThe Sex and Age Distributions of Population: The 1990 Revision of the United Nations Global Population Estimates and Projections. New York: United Nations, 1991.
Citace podle MLAThe Sex and Age Distributions of Population: The 1990 Revision of the United Nations Global Population Estimates and Projections. New York: United Nations, 1991.
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