United Nations. Department of Social Affairs. (1949). Problems of migration statistics. United Nations, Department of Social Affairs.
Citace podle Chicago (17th ed.)United Nations. Department of Social Affairs. Problems of Migration Statistics. Lake Success, N.Y: United Nations, Department of Social Affairs, 1949.
Citace podle MLA (9th ed.)United Nations. Department of Social Affairs. Problems of Migration Statistics. United Nations, Department of Social Affairs, 1949.
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