United Nations. Economic and Social Commission for Asia and the Pacific. (1986). Levels and trends of fertility in Jilin and Hebei provinces, China. United Nations.
Citazione stile Chigago Style (17a edizione)United Nations. Economic and Social Commission for Asia and the Pacific. Levels and Trends of Fertility in Jilin and Hebei Provinces, China. New York: United Nations, 1986.
Citatione MLA (9a ed.)United Nations. Economic and Social Commission for Asia and the Pacific. Levels and Trends of Fertility in Jilin and Hebei Provinces, China. United Nations, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.