Não informado. (2004). World population. U.S. Department of Commerce, Bureau of the Census.
Citace podle Chicago (17th ed.)Não informado. World Population. Washington: U.S. Department of Commerce, Bureau of the Census, 2004.
Citace podle MLA (8th ed.)Não informado. World Population. U.S. Department of Commerce, Bureau of the Census, 2004.
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