United Nations. Department of Social Affairs. Population Division & United Nations. Department for Economic and Social Information and Policy Analysis. Population Division. (1951). Population bulletin. United Nations.
Lua i Stíl Chicago (17ú heag.)United Nations. Department of Social Affairs. Population Division agus United Nations. Department for Economic and Social Information and Policy Analysis. Population Division. Population Bulletin. New York: United Nations, 1951.
Lua MLA (9ú heag.)United Nations. Department of Social Affairs. Population Division agus United Nations. Department for Economic and Social Information and Policy Analysis. Population Division. Population Bulletin. United Nations, 1951.
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