United Nations. Department of Social Affairs. (1949). Problems of migration statistics. United Nations, Department of Social Affairs.
Citação do estilo Chicago (17ª ed.)United Nations. Department of Social Affairs. Problems of Migration Statistics. Lake Success, N.Y: United Nations, Department of Social Affairs, 1949.
Citação MLA (9ª ed.)United Nations. Department of Social Affairs. Problems of Migration Statistics. United Nations, Department of Social Affairs, 1949.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.