United Nations. Department of Economic and Social Affairs. (1955). Estudio economico mundial. [s.n.].
Chicago-viite (17. p.)United Nations. Department of Economic and Social Affairs. Estudio Economico Mundial. New York: [s.n.], 1955.
MLA-viite (9. p.)United Nations. Department of Economic and Social Affairs. Estudio Economico Mundial. [s.n.], 1955.
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