APA (7 ম সংস্করণ) উদ্ধৃতি

United Nations. Department of Economic and Social Affairs. Population Division. (2002). World population ageing, 1950-2050. United Nations.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

United Nations. Department of Economic and Social Affairs. Population Division. World Population Ageing, 1950-2050. New York: United Nations, 2002.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

United Nations. Department of Economic and Social Affairs. Population Division. World Population Ageing, 1950-2050. United Nations, 2002.