Παραπομπή σε μορφή APA (7η εκδ.)

United Nations Department of Economic and Social Information and Policy Analysis. (1991). Population bulletin of the United Nations No 31/32-1991. United Nations.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United Nations Department of Economic and Social Information and Policy Analysis. Population Bulletin of the United Nations No 31/32-1991. New York: United Nations, 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

United Nations Department of Economic and Social Information and Policy Analysis. Population Bulletin of the United Nations No 31/32-1991. United Nations, 1991.