United Nations. Department of International Economic and Social Affairs. (1990). Patterns of first marriage: Timing and prevalence. United Nations.
Lua i Stíl Chicago (17ú heag.)United Nations. Department of International Economic and Social Affairs. Patterns of First Marriage: Timing and Prevalence. New York: United Nations, 1990.
Lua MLA (9ú heag.)United Nations. Department of International Economic and Social Affairs. Patterns of First Marriage: Timing and Prevalence. United Nations, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.