Citação norma APA

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.

Citação norma Chicago

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.

Citação norma MLA

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.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.