United Nations. (1983). Modelling economic and demographic development. United Nations.
Citazione stile Chigago Style (17a edizione)United Nations. Modelling Economic and Demographic Development. New York: United Nations, 1983.
Citatione MLA (9a ed.)United Nations. Modelling Economic and Demographic Development. United Nations, 1983.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.