United Nations. Department of International Economic and Social Affairs. Population Division. (1998). World population prospects: The 1996 revision. United Nations.
Cita Chicago (17th ed.)United Nations. Department of International Economic and Social Affairs. Population Division. World Population Prospects: The 1996 Revision. New York: United Nations, 1998.
Cita MLA (9th ed.)United Nations. Department of International Economic and Social Affairs. Population Division. World Population Prospects: The 1996 Revision. United Nations, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.