APA (7th ed.) Zitazioa

United Nations. Department of International Economic and Social Affairs. (1989). Global estimates and projections of population by sex and age: The 1988 revision. United Nations.

Chicago Style (17th ed.) Zitazioa

United Nations. Department of International Economic and Social Affairs. Global Estimates and Projections of Population by Sex and Age: The 1988 Revision. New York: United Nations, 1989.

MLA (9th ed.) Zitazioa

United Nations. Department of International Economic and Social Affairs. Global Estimates and Projections of Population by Sex and Age: The 1988 Revision. United Nations, 1989.