United Nations. Department of Economic and Social Affairs. Population Division. (2013). World population prospects 2013. United Nations.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. New York: United Nations, 2013.
MLA -ийн эшлэл (9 дэх хэвлэлт)United Nations. Department of Economic and Social Affairs. Population Division. World Population Prospects 2013. United Nations, 2013.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.