United Nations. Department of Economic and Social Affairs. Population Division. (2003). Partnership and reproductive behaviour in low-fertility countries. United Nations.
Chicago-viite (17. p.)United Nations. Department of Economic and Social Affairs. Population Division. Partnership and Reproductive Behaviour in Low-fertility Countries. New York: United Nations, 2003.
MLA-viite (9. p.)United Nations. Department of Economic and Social Affairs. Population Division. Partnership and Reproductive Behaviour in Low-fertility Countries. United Nations, 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.