United Nations. Dept. of Economic and Social Affairs. (1978). Demographic yearbook 1977 =: Annuaire démographique 1977 : special topic : international migration statistics (29th issue.). United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations. Dept. of Economic and Social Affairs. Demographic Yearbook 1977 =: Annuaire Démographique 1977 : Special Topic : International Migration Statistics. 29th issue. New York: United Nations, 1978.
Παραπομπή σε μορφή MLA (8th εκδ.)United Nations. Dept. of Economic and Social Affairs. Demographic Yearbook 1977 =: Annuaire Démographique 1977 : Special Topic : International Migration Statistics. 29th issue. United Nations, 1978.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.
