United Nations. Department of International Economic and Social Affairs. (1988). First marriage: Patterns and determinants. United Nations.
Chicago Style aipamenaUnited Nations. Department of International Economic and Social Affairs. First Marriage: Patterns and Determinants. New York: United Nations, 1988.
MLA aipamenaUnited Nations. Department of International Economic and Social Affairs. First Marriage: Patterns and Determinants. United Nations, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.