Cita APA (7a ed.)

United Nations. Department of Economic and Social Affairs. Population Division. (2007). World population ageing 2007. United Nations, Department of Economic and Social Affairs, Population Division.

Cita Chicago Style (17a ed.)

United Nations. Department of Economic and Social Affairs. Population Division. World Population Ageing 2007. New York: United Nations, Department of Economic and Social Affairs, Population Division, 2007.

Cita MLA (9a ed.)

United Nations. Department of Economic and Social Affairs. Population Division. World Population Ageing 2007. United Nations, Department of Economic and Social Affairs, Population Division, 2007.