United Nations Department of International Economic and Social Affairs. (1987). Global estimates and projections of population by sex and age: The 1984 assessment. United Nations.
Cita Chicago (17th ed.)United Nations Department of International Economic and Social Affairs. Global Estimates and Projections of Population by Sex and Age: The 1984 Assessment. New York: United Nations, 1987.
Cita MLA (9th ed.)United Nations Department of International Economic and Social Affairs. Global Estimates and Projections of Population by Sex and Age: The 1984 Assessment. United Nations, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.