Cita APA (7a ed.)
DEPARTMENT OF ECONOMIC AND SOCIAL AFFAIRS. (2002). WORLD POPULATION AGEING 1950-2050. NACIONES UNIDAS.
Cita Chicago Style (17a ed.)
DEPARTMENT OF ECONOMIC AND SOCIAL AFFAIRS. WORLD POPULATION AGEING 1950-2050. NUEVA YORK: NACIONES UNIDAS, 2002.
Cita MLA (9a ed.)
DEPARTMENT OF ECONOMIC AND SOCIAL AFFAIRS. WORLD POPULATION AGEING 1950-2050. NACIONES UNIDAS, 2002.
Precaución: Estas citas no son 100% exactas.