United Nations, Department of International Economic and Social Affairs. (1987). Global population policy database, 1987. United Nations, Dept. of International Economic and Social Affairs.
Citazione stile Chigago Style (17a edizione)United Nations, Department of International Economic and Social Affairs. Global Population Policy Database, 1987. New York: United Nations, Dept. of International Economic and Social Affairs, 1987.
Citatione MLA (9a ed.)United Nations, Department of International Economic and Social Affairs. Global Population Policy Database, 1987. United Nations, Dept. of International Economic and Social Affairs, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.