Não informado. (2004). World population. U.S. Department of Commerce, Bureau of the Census.
Chicago-viite (17. p.)Não informado. World Population. Washington: U.S. Department of Commerce, Bureau of the Census, 2004.
MLA-viite (8. p.)Não informado. World Population. U.S. Department of Commerce, Bureau of the Census, 2004.
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